1.
NATO
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The North Atlantic Treaty Organization, also called the North Atlantic Alliance, is an intergovernmental military alliance based on the North Atlantic Treaty which was signed on 4 April 1949. The organization constitutes a system of collective defence whereby its member states agree to mutual defence in response to an attack by any external party, three NATO members are permanent members of the United Nations Security Council with the power to veto and are officially nuclear-weapon states. NATOs headquarters are located in Haren, Brussels, Belgium, while the headquarters of Allied Command Operations is near Mons. NATO is an Alliance that consists of 28 independent member countries across North America and Europe, an additional 22 countries participate in NATOs Partnership for Peace program, with 15 other countries involved in institutionalized dialogue programmes. The combined military spending of all NATO members constitutes over 70% of the global total, Members defence spending is supposed to amount to 2% of GDP. The course of the Cold War led to a rivalry with nations of the Warsaw Pact, politically, the organization sought better relations with former Warsaw Pact countries, several of which joined the alliance in 1999 and 2004. N. The Treaty of Brussels, signed on 17 March 1948 by Belgium, the Netherlands, Luxembourg, France, the treaty and the Soviet Berlin Blockade led to the creation of the Western European Unions Defence Organization in September 1948. However, participation of the United States was thought necessary both to counter the power of the USSR and to prevent the revival of nationalist militarism. He got a hearing, especially considering American anxiety over Italy. In 1948 European leaders met with U. S. defense, military and diplomatic officials at the Pentagon, marshalls orders, exploring a framework for a new and unprecedented association. Talks for a new military alliance resulted in the North Atlantic Treaty and it included the five Treaty of Brussels states plus the United States, Canada, Portugal, Italy, Norway, Denmark and Iceland. The first NATO Secretary General, Lord Ismay, stated in 1949 that the goal was to keep the Russians out, the Americans in. Popular support for the Treaty was not unanimous, and some Icelanders participated in a pro-neutrality, the creation of NATO can be seen as the primary institutional consequence of a school of thought called Atlanticism which stressed the importance of trans-Atlantic cooperation. The members agreed that an attack against any one of them in Europe or North America would be considered an attack against them all. The treaty does not require members to respond with military action against an aggressor, although obliged to respond, they maintain the freedom to choose the method by which they do so. This differs from Article IV of the Treaty of Brussels, which states that the response will be military in nature. It is nonetheless assumed that NATO members will aid the attacked member militarily, the treaty was later clarified to include both the members territory and their vessels, forces or aircraft above the Tropic of Cancer, including some Overseas departments of France. The creation of NATO brought about some standardization of allied military terminology, procedures, and technology, the roughly 1300 Standardization Agreements codified many of the common practices that NATO has achieved
2.
Airborne early warning and control
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AEW&C units are also used to carry out surveillance, including over ground targets and frequently perform C2BM functions similar to an Air Traffic Controller given military command over other forces. Like a ground based radar, it can be detected by opposing forces, the system is used offensively to direct fighters to their target locations, and defensively, directing counterattacks on enemy forces, both air and ground. The designation airborne early warning was used for earlier similar aircraft, AWACS is the name of the specific system installed in the E-3 and Japanese Boeing E-767 AEW&C airframes, but is often used as a general synonym for AEW&C. Modern AEW&C systems can detect aircraft from up to 400 km away, one AEW&C aircraft flying at 9,000 m can cover an area of 312,000 km2. Three such aircraft in overlapping orbits can cover the whole of Central Europe, the intention was to cover the North West approaches where German long range Focke-Wulf Fw 200 Condor aircraft were threatening shipping. A Vickers Wellington bomber was fitted with an antenna array. It was tested for use against aerial targets and then for possible use against German E boats, another radar equipped Wellington with a different installation was used to direct Bristol Beaufighters toward Heinkel He 111s, which were air-launching V-1 flying bombs. In February 1944 the U. S. Navy ordered the development of a system that could be carried aloft in an aircraft under Project Cadillac. A prototype system was built and flown in August on a modified TBM Avenger torpedo bomber, tests proved successful, with the system being able to detect low flying formations at a range in excess of 100 miles. The U. S. Navy then ordered production of the TBM-3W, tBM-3Ws fitted with the AN/APS-20 radar entered service in March 1945, with some 36–40 eventually being constructed. The Lockheed WV and EC-121 Warning Star, which first flew in 1949 served widely with both the US Air Force and US Navy and provided the main AEW coverage for US forces during the Vietnam war. It was to remain operational until replaced with the E-3 AWACS, in 1958, the Soviet Tupolev Design Bureau was also ordered to design an AEW aircraft. After determining that the projected radar instrumentation wouldnt fit in a Tupolev Tu-95 or a Tupolev Tu-116 and this solved the problems with cooling and operator space that existed with the narrower Tu-95 and Tu-116 fuselage. To meet the range requirements, production examples were fitted with an air-to-air refueling probe. The resulting system, the Tupolev Tu-126, entered service in 1965 with the Soviet Air Forces, many countries have developed their own AEW&C systems, although the Boeing E-3 Sentry and Northrop Grumman E-2 Hawkeye are the most common systems worldwide. The E-3 Sentry was built by the Boeing Defense and Space Group and was based on the Boeing 707-320 aircraft,65 E-3 were built and it is operated by the United States Air Force, NATO, the British Royal Air Force, France and controversially, Saudi Arabia. The specially designed Grumman E-2 Hawkeye entered service in 1965 and has operated by eight different nations. Over 168 have been produced so far and new versions continue to be developed making it the most widely used AEW system, for the Japan Air Self-Defense Force, the E-3 technology has been fitted into the Boeing E-767
3.
United States
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Forty-eight of the fifty states and the federal district are contiguous and located in North America between Canada and Mexico. The state of Alaska is in the northwest corner of North America, bordered by Canada to the east, the state of Hawaii is an archipelago in the mid-Pacific Ocean. The U. S. territories are scattered about the Pacific Ocean, the geography, climate and wildlife of the country are extremely diverse. At 3.8 million square miles and with over 324 million people, the United States is the worlds third- or fourth-largest country by area, third-largest by land area. It is one of the worlds most ethnically diverse and multicultural nations, paleo-Indians migrated from Asia to the North American mainland at least 15,000 years ago. European colonization began in the 16th century, the United States emerged from 13 British colonies along the East Coast. Numerous disputes between Great Britain and the following the Seven Years War led to the American Revolution. On July 4,1776, during the course of the American Revolutionary War, the war ended in 1783 with recognition of the independence of the United States by Great Britain, representing the first successful war of independence against a European power. The current constitution was adopted in 1788, after the Articles of Confederation, the first ten amendments, collectively named the Bill of Rights, were ratified in 1791 and designed to guarantee many fundamental civil liberties. During the second half of the 19th century, the American Civil War led to the end of slavery in the country. By the end of century, the United States extended into the Pacific Ocean. The Spanish–American War and World War I confirmed the status as a global military power. The end of the Cold War and the dissolution of the Soviet Union in 1991 left the United States as the sole superpower. The U. S. is a member of the United Nations, World Bank, International Monetary Fund, Organization of American States. The United States is a developed country, with the worlds largest economy by nominal GDP. It ranks highly in several measures of performance, including average wage, human development, per capita GDP. While the U. S. economy is considered post-industrial, characterized by the dominance of services and knowledge economy, the United States is a prominent political and cultural force internationally, and a leader in scientific research and technological innovations. In 1507, the German cartographer Martin Waldseemüller produced a map on which he named the lands of the Western Hemisphere America after the Italian explorer and cartographer Amerigo Vespucci
4.
Canada
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Canada is a country in the northern half of North America. Canadas border with the United States is the worlds longest binational land border, the majority of the country has a cold or severely cold winter climate, but southerly areas are warm in summer. Canada is sparsely populated, the majority of its territory being dominated by forest and tundra. It is highly urbanized with 82 per cent of the 35.15 million people concentrated in large and medium-sized cities, One third of the population lives in the three largest cities, Toronto, Montreal and Vancouver. Its capital is Ottawa, and other urban areas include Calgary, Edmonton, Quebec City, Winnipeg. Various aboriginal peoples had inhabited what is now Canada for thousands of years prior to European colonization. Pursuant to the British North America Act, on July 1,1867, the colonies of Canada, New Brunswick and this began an accretion of provinces and territories to the mostly self-governing Dominion to the present ten provinces and three territories forming modern Canada. With the Constitution Act 1982, Canada took over authority, removing the last remaining ties of legal dependence on the Parliament of the United Kingdom. Canada is a parliamentary democracy and a constitutional monarchy, with Queen Elizabeth II being the head of state. The country is officially bilingual at the federal level and it is one of the worlds most ethnically diverse and multicultural nations, the product of large-scale immigration from many other countries. Its advanced economy is the eleventh largest in the world, relying chiefly upon its abundant natural resources, Canadas long and complex relationship with the United States has had a significant impact on its economy and culture. Canada is a country and has the tenth highest nominal per capita income globally as well as the ninth highest ranking in the Human Development Index. It ranks among the highest in international measurements of government transparency, civil liberties, quality of life, economic freedom, Canada is an influential nation in the world, primarily due to its inclusive values, years of prosperity and stability, stable economy, and efficient military. While a variety of theories have been postulated for the origins of Canada. In 1535, indigenous inhabitants of the present-day Quebec City region used the word to direct French explorer Jacques Cartier to the village of Stadacona, from the 16th to the early 18th century Canada referred to the part of New France that lay along the St. Lawrence River. In 1791, the area became two British colonies called Upper Canada and Lower Canada collectively named The Canadas, until their union as the British Province of Canada in 1841. Upon Confederation in 1867, Canada was adopted as the name for the new country at the London Conference. The transition away from the use of Dominion was formally reflected in 1982 with the passage of the Canada Act, later that year, the name of national holiday was changed from Dominion Day to Canada Day
5.
September 11 attacks
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The September 11 attacks were a series of four coordinated terrorist attacks by the Islamic terrorist group al-Qaeda on the United States on the morning of Tuesday, September 11,2001. The attacks killed 2,996 people, injured over 6,000 others, two of the planes, American Airlines Flight 11 and United Airlines Flight 175, were crashed into the North and South towers, respectively, of the World Trade Center complex in New York City. A third plane, American Airlines Flight 77, was crashed into the Pentagon in Arlington County, Virginia and it was the deadliest incident for firefighters and law enforcement officers in the history of the United States, with 343 and 72 killed respectively. Suspicion for the attack fell on al-Qaeda. The United States responded to the attacks by launching the War on Terror and invading Afghanistan to depose the Taliban, many countries strengthened their anti-terrorism legislation and expanded the powers of law enforcement and intelligence agencies to prevent terrorist attacks. Although al-Qaedas leader, Osama bin Laden, initially denied any involvement, al-Qaeda and bin Laden cited U. S. support of Israel, the presence of U. S. troops in Saudi Arabia, and sanctions against Iraq as motives. Having evaded capture for almost a decade, bin Laden was located and killed by SEAL Team Six of the U. S. Navy in May 2011. S. many closings, evacuations, and cancellations followed, out of respect or fear of further attacks. Cleanup of the World Trade Center site was completed in May 2002, on November 18,2006, construction of One World Trade Center began at the World Trade Center site. The building was opened on November 3,2014. The origins of al-Qaeda can be traced to 1979 when the Soviet Union invaded Afghanistan, Osama bin Laden traveled to Afghanistan and helped organize Arab mujahideen to resist the Soviets. Under the guidance of Ayman al-Zawahiri, bin Laden became more radical, in 1996, bin Laden issued his first fatwā, calling for American soldiers to leave Saudi Arabia. Bin Laden used Islamic texts to exhort Muslims to attack Americans until the stated grievances are reversed, Muslim legal scholars have throughout Islamic history unanimously agreed that the jihad is an individual duty if the enemy destroys the Muslim countries, according to bin Laden. Bin Laden, who orchestrated the attacks, initially denied but later admitted involvement, in November 2001, U. S. forces recovered a videotape from a destroyed house in Jalalabad, Afghanistan. In the video, bin Laden is seen talking to Khaled al-Harbi, on December 27,2001, a second bin Laden video was released. In the video, he said, It has become clear that the West in general and it is the hatred of crusaders. Terrorism against America deserves to be praised because it was a response to injustice, aimed at forcing America to stop its support for Israel, the transcript refers several times to the United States specifically targeting Muslims. He said that the attacks were carried out because, we are free, and want to regain freedom for our nation. As you undermine our security we undermine yours, Bin Laden said he had personally directed his followers to attack the World Trade Center and the Pentagon
6.
National Guard of the United States
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All members of the National Guard of the United States are also members of the militia of the United States as defined by 10 U. S. C. National Guard units are under the control of the state. The majority of National Guard soldiers and airmen hold a civilian job full-time while serving part-time as a National Guard member, local militias were formed from the earliest English colonization of the Americas in 1607. The first colony-wide militia was formed by Massachusetts in 1636 by merging small older local units, the various colonial militias became state militias when the United States became independent. The title National Guard was used from 1824 by some New York State militia units, National Guard became a standard nationwide militia title in 1903, and specifically indicated reserve forces under mixed state and federal control from 1933. The first muster of militia forces in what is today the United States took place on September 16,1565, appropriately enough, this muster occurred in the shadow of an oncoming hurricane. This Spanish militia tradition and the English tradition that would be established to the north would provide the nucleus for Colonial defense in the New World. The militia tradition continued with the first permanent English settlements in the New World, Jamestown Colony and Plymouth Colony both had militia forces, which initially consisted of every able bodied adult male. By the mid-1600s every town had at least one militia company, as a result of the Spanish–American War, Congress was called upon to reform and regulate the training and qualification of state militias. The first national laws regulating the militia were the Militia acts of 1792, in 1903, with passage of the Dick Act, the predecessor to the modern-day National Guard was formed. It required the states to divide their militias into two sections, the law recommended the title National Guard for the first section, known as the organized militia, and Reserve Militia for all others. During World War I, Congress passed the National Defense Act of 1916, Congress also authorized the states to maintain Home Guards, which were reserve forces outside the National Guards being deployed by the Federal Government. The National Guard of the states, territories, and the District of Columbia serves as part of the first-line of defense for the United States. C. Where the National Guard operates under the President of the United States or his designee, the governors exercise control through the state adjutants general. The National Guard may be called up for duty by the governors to help respond to domestic emergencies and disasters, such as hurricanes, floods. The National Guard is administered by the National Guard Bureau, which is a joint activity of the Army, the National Guard Bureau provides a communication channel for state National Guards to the DoD. S. C. The National Guard Bureau is headed by the Chief of the National Guard Bureau, prior to 2008, the functions of Agricultural Development Teams were within Provincial Reconstruction Teams of the US Government. Today, ADTs consist of soldiers and airmen from the Army National Guard, today, ADTs bring an effective platform for enhanced dialogue, building confidence, sharing interests, and increasing cooperation amongst the disparate peoples and tribes of Afghanistan
7.
Royal Canadian Air Force
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The Royal Canadian Air Force is the air force of Canada. Its role is to provide the Canadian Forces with relevant, responsive and effective airpower, the RCAF is one of three environmental commands within the unified Canadian Armed Forces. Lieutenant-General Michael J. Hood, CMM CD, is the current Commander of the Royal Canadian Air Force, the RCAF is a partner with the United States Air Force in protecting continental airspace under the North American Aerospace Defense Command. The RCAF also provides all primary air resources to and is responsible for the National Search, the RCAF traces its history to the Canadian Air Force which was formed in 1920. The Canadian Air Force was incorporated in 1923 and granted royal sanction in 1924 by King George V, in 1968 the RCAF was amalgamated with the Royal Canadian Navy, and the Canadian Army, as part of the unification of the Canadian Forces. Air units were split between several different commands, Air Defence Command, Air Transport Command, Mobile Command, Maritime Command, in 1975 some commands were dissolved, and all air units were placed under a new environmental command called simply Air Command. Air Command reverted to its name of the Royal Canadian Air Force in August 2011. The Royal Canadian Air Force has served in the Second World War, the Korean War, as a NATO member, the force maintained a presence in Europe during the second half of the 20th century. The Canadian Air Force was established in 1920 as the successor to a short-lived two-squadron Canadian Air Force formed during the First World War in Europe. John Scott Williams, MC, AFC, was tasked in 1921 with organizing the CAF, the new Canadian Air Force was a branch of the Air Board and was chiefly a training militia that provided refresher training to veteran pilots. Many CAF members also worked with the Air Boards Civil Operations Branch on operations that included forestry, in 1923, the CAF became responsible for all flying operations in Canada, including civil aviation. In 1924, the Canadian Air Force, was granted the royal title, most of its work was civil in nature, however, in the late 1920s the RCAF evolved into more of a military organization. After budget cuts in the early 1930s, the air began to rebuild. By the end of the war, the RCAF had become the fourth largest allied air force, after the war, the RCAF reduced its strength. In 1950, the RCAF became involved with the transport of troops and supplies to the Korean War, however, members of the RCAF served in USAF units as exchange officers and several flew in combat. Both auxiliary and regular air defence squadrons were run by Air Defence Command, at the same time, the Pinetree Line, the Mid-Canada Line and the DEW Line radar stations, largely operated by the RCAF, were built across Canada because of the growing Soviet nuclear threat. In 1957, Canada and the United States created the joint North American Air Defense Command, coastal defence and peacekeeping also became priorities during the 1950s and 1960s. In 1968 the Royal Canadian Navy, Royal Canadian Air Force and this initiative was overseen by then Liberal Defence Minister, Paul Hellyer
8.
United States Army
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The United States Armed Forces are the federal armed forces of the United States. They consist of the Army, Marine Corps, Navy, Air Force, from the time of its inception, the military played a decisive role in the history of the United States. A sense of unity and identity was forged as a result of victory in the First Barbary War. Even so, the Founders were suspicious of a permanent military force and it played an important role in the American Civil War, where leading generals on both sides were picked from members of the United States military. Not until the outbreak of World War II did a standing army become officially established. The National Security Act of 1947, adopted following World War II and during the Cold Wars onset, the U. S. military is one of the largest militaries in terms of number of personnel. It draws its personnel from a pool of paid volunteers. As of 2016, the United States spends about $580.3 billion annually to fund its military forces, put together, the United States constitutes roughly 40 percent of the worlds military expenditures. For the period 2010–14, the Stockholm International Peace Research Institute found that the United States was the worlds largest exporter of major arms, the United States was also the worlds eighth largest importer of major weapons for the same period. The history of the U. S. military dates to 1775 and these forces demobilized in 1784 after the Treaty of Paris ended the War for Independence. All three services trace their origins to the founding of the Continental Army, the Continental Navy, the United States President is the U. S. militarys commander-in-chief. Rising tensions at various times with Britain and France and the ensuing Quasi-War and War of 1812 quickened the development of the U. S. Navy, the reserve branches formed a military strategic reserve during the Cold War, to be called into service in case of war. Time magazines Mark Thompson has suggested that with the War on Terror, Command over the armed forces is established in the United States Constitution. The sole power of command is vested in the President by Article II as Commander-in-Chief, the Constitution also allows for the creation of executive Departments headed principal officers whose opinion the President can require. This allowance in the Constitution formed the basis for creation of the Department of Defense in 1947 by the National Security Act, the Defense Department is headed by the Secretary of Defense, who is a civilian and member of the Cabinet. The Defense Secretary is second in the chain of command, just below the President. Together, the President and the Secretary of Defense comprise the National Command Authority, to coordinate military strategy with political affairs, the President has a National Security Council headed by the National Security Advisor. The collective body has only power to the President
9.
White House
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The White House is the official residence and principal workplace of the President of the United States, located at 1600 Pennsylvania Avenue NW in Washington, D. C. It has been the residence of every U. S. president since John Adams in 1800, the term White House is often used to refer to actions of the president and his advisers, as in The White House announced that. The residence was designed by Irish-born architect James Hoban in the Neoclassical style, construction took place between 1792 and 1800 using Aquia Creek sandstone painted white. When Thomas Jefferson moved into the house in 1801, he added low colonnades on each wing that concealed stables and storage. In 1814, during the War of 1812, the mansion was set ablaze by the British Army in the Burning of Washington, destroying the interior, reconstruction began almost immediately, and President James Monroe moved into the partially reconstructed Executive Residence in October 1817. Exterior construction continued with the addition of the semi-circular South portico in 1824, because of crowding within the executive mansion itself, President Theodore Roosevelt had all work offices relocated to the newly constructed West Wing in 1901. Eight years later in 1909, President William Howard Taft expanded the West Wing and created the first Oval Office, in the main mansion, the third-floor attic was converted to living quarters in 1927 by augmenting the existing hip roof with long shed dormers. A newly constructed East Wing was used as an area for social events. East Wing alterations were completed in 1946, creating additional office space, by 1948, the houses load-bearing exterior walls and internal wood beams were found to be close to failure. Under Harry S. Truman, the rooms were completely dismantled. Once this work was completed, the rooms were rebuilt. The Executive Residence is made up of six stories—the Ground Floor, State Floor, Second Floor, the property is a National Heritage Site owned by the National Park Service and is part of the Presidents Park. In 2007, it was ranked second on the American Institute of Architects list of Americas Favorite Architecture, in May 1790, New York began construction of Government House for his official residence, but he never occupied it. The national capital moved to Philadelphia in December 1790, the July 1790 Residence Act named Philadelphia, Pennsylvania the temporary national capital for a 10-year period while the Federal City was under construction. The City of Philadelphia rented Robert Morriss city house at 190 High Street for Washingtons presidential residence, the first president occupied the Market Street mansion from November 1790 to March 1797, and altered it in ways that may have influenced the design of the White House. As part of an effort to have Philadelphia named the permanent national capital, Pennsylvania built a much grander presidential mansion several blocks away. President John Adams also occupied the Market Street mansion from March 1797 to May 1800, on Saturday, November 1,1800, he became the first president to occupy the White House. The Presidents House in Philadelphia became a hotel and was demolished in 1832, the Presidents House was a major feature of Pierre Charles LEnfants plan for the newly established federal city, Washington, D. C
10.
The Pentagon
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The Pentagon is the headquarters of the United States Department of Defense, located in Arlington County, Virginia, across the Potomac River from Washington, D. C. As a symbol of the U. S. military, The Pentagon is often used metonymically to refer to the U. S. Department of Defense, the Pentagon was designed by American architect George Bergstrom, and built by general contractor John McShain of Philadelphia. Ground was broken for construction on September 11,1941, General Brehon Somervell provided the major motive power behind the project, Colonel Leslie Groves was responsible for overseeing the project for the U. S. Army. The Pentagon is one of the worlds largest office buildings, with about 6,500,000 sq ft, approximately 23,000 military and civilian employees and about 3,000 non-defense support personnel work in the Pentagon. It has five sides, five floors above ground, two basement levels, and five ring corridors per floor with a total of 17.5 mi of corridors. It was the first significant foreign attack on Washingtons governmental facilities since the city was burned by the British, when World War II broke out in Europe, the War Department rapidly expanded in anticipation that the United States would be drawn into the conflict. Secretary of War Henry L. Stimson found the situation unacceptable, with the Munitions Building overcrowded, Stimson told U. S. President Franklin D. Roosevelt in May 1941 that the War Department needed additional space. On July 17,1941, a hearing took place, organized by Virginia congressman Clifton Woodrum. Reybold agreed to back to the congressman within five days. The War Department called upon its construction chief, General Brehon Somervell, Government officials agreed that the War Department building, officially designated Federal Office Building No 1, should be constructed across the Potomac River, in Arlington County, Virginia. Requirements for the new building were that it be no more than four stories tall, the requirements meant that, instead of rising vertically, the building would be sprawling over a large area. Possible sites for the building included the Department of Agricultures Arlington Experimental Farm, adjacent to Arlington National Cemetery, the site originally chosen was Arlington Farms which had a roughly pentagonal shape, so the building was planned accordingly as an irregular pentagon. Concerned that the new building could obstruct the view of Washington, D. C. from Arlington Cemetery, the building retained its pentagonal layout because a major redesign at that stage would have been costly, and Roosevelt liked the design. Freed of the constraints of the asymmetric Arlington Farms site, it was modified into a pentagon which resembled the star forts of the gunpowder age. While the project went through the process in late July 1941, Somervell selected the contractors, including John McShain, Inc. and Doyle and Russell. In addition to the Hoover Airport site and other government-owned land, construction of the Pentagon required an additional 287 acres, which were acquired at a cost of $2.2 million. The Hells Bottom neighborhood, a slum with numerous pawnshops, factories, approximately 150 homes, Later 300 acres of land were transferred to Arlington National Cemetery and to Fort Myer, leaving 280 acres for the Pentagon. Contracts totaling $31,100,000 were finalized with McShain and the contractors on September 11
11.
United States Capitol
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The United States Capitol, often called the Capitol Building or Capitol Hill, is the home of the United States Congress, and the seat of the legislative branch of the U. S. federal government. It sits atop Capitol Hill at the end of the National Mall in Washington. Though not at the center of the Federal District, the Capitol forms the origin point for the Districts street-numbering system. The original building was completed in 1800 and was subsequently expanded, like the principal buildings of the executive and judicial branches, the Capitol is built in a distinctive neoclassical style and has a white exterior. Both its east and west elevations are referred to as fronts, though only the east front was intended for the reception of visitors. In 2014, scaffolding was erected around the dome for a project scheduled to be completed by early 2017. All exterior scaffolding was removed by the end of summer 2016, prior to establishing the nations capital in Washington, D. C. the United States Congress and its predecessors had met in Philadelphia, New York City, and a number of other locations. In September 1774, the First Continental Congress brought together delegates from the colonies in Philadelphia, followed by the Second Continental Congress, Congress requested that John Dickinson, the Governor of Pennsylvania, call up the militia to defend Congress from attacks by the protesters. In what became known as the Pennsylvania Mutiny of 1783, Dickinson sympathized with the protesters and refused to remove them from Philadelphia. As a result, Congress was forced to flee to Princeton, New Jersey, on June 21,1783, and met in Annapolis, Maryland, the United States Congress was established upon ratification of the United States Constitution and formally began on March 4,1789. New York City remained home to Congress until July 1790, when the Residence Act was passed to pave the way for a permanent capital. As part of the legislation, Philadelphia was chosen as a capital for ten years, until the nations capital in Washington. Pierre Charles LEnfant was given the task of creating the city plan for the new capital city, in reviewing LEnfants plan, Thomas Jefferson insisted the legislative building be called the Capitol rather than Congress House. The word Capitol comes from Latin and is associated with the Temple of Jupiter Optimus Maximus on Capitoline Hill, the connection between the two is not, however, crystal clear. In spring 1792, United States Secretary of State Thomas Jefferson proposed a competition to solicit designs for the Capitol and the Presidents House. The prize for the competition was $500 and a lot in the Federal City, the most promising of the submissions was by Stephen Hallet, a trained French architect. However, Hallets designs were overly fancy, with too much French influence, a late entry by amateur architect William Thornton was submitted on January 31,1793, to much praise for its Grandeur, Simplicity, and Beauty by Washington, along with praise from Thomas Jefferson. Thornton was inspired by the east front of the Louvre, as well as the Paris Pantheon for the portion of the design
12.
McDonnell Douglas F-15 Eagle
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The McDonnell Douglas F-15 Eagle is an American twin-engine, all-weather tactical fighter aircraft designed by McDonnell Douglas to gain and maintain air supremacy in aerial combat. Following reviews of proposals, the United States Air Force selected McDonnell Douglas design in 1967 to meet the services need for an air superiority fighter. The Eagle first flew in July 1972, and entered service in 1976 and it is among the most successful modern fighters, with over 100 victories and no losses in aerial combat, with the majority of the kills scored by the Israel Air Force. The Eagle has been exported to Israel, Japan, and Saudi Arabia, the F-15 was originally envisioned as a pure air superiority aircraft. Its design included a secondary ground-attack capability that was largely unused, the aircraft design proved flexible enough that an all-weather strike derivative, the F-15E Strike Eagle, was later developed and entered service in 1989. The F-15 Eagle is expected to be in service with the U. S. Air Force past 2025, newer models are still being produced for foreign users. The F-15 production line is set to end in 2019,47 years after the types first flight. The F-15 can ultimately trace its origins to the Vietnam War, when the U. S. Air Force, at the time, Defense Secretary Robert McNamara was pressing for both services to use as many common aircraft as possible, even if there were performance sacrifices involved. The former were capable in the tactical role, while the latter might be less so. If the Air Force did choose a design, maintaining air superiority would be a top priority. The next month, a report on light tactical aircraft suggested the Air Force purchase the F-5 or A-7 and this point was reinforced after the loss of two Republic F-105 Thunderchief aircraft to obsolete MiG-15s or MiG-17s on 4 April 1965. In April 1965, Harold Brown, at that time director of the DDR&E, stated the position was to consider the F-5. On 1 August, Gabriel Disosway took command of Tactical Air Command and reiterated calls for the F-X, an official requirements document was finalized in October, and sent out as a request for proposals to 13 companies on 8 December 1965. Following a downselect, four companies were asked to further developments. In total, they developed some 500 design concepts, typical designs featured variable-sweep wings, weighed over 60,000 pounds, included a top speed of Mach 2.7 and a thrust-to-weight ratio of 0.75. When the proposals were studied in July 1966, the aircraft were roughly the size and weight of the TFX, and like that aircraft, through this period, studies of combat over Vietnam were producing worrying results. Previous doctrine had stressed long-range combat using missiles, and optimized aircraft for this role, the result was highly loaded aircraft with large radars and excellent speed, but limited maneuverability and often lacking a gun. In early 1967, they proposed that the design had a thrust-to-weight ratio of near 1,1, a maximum speed further reduced to Mach 2.3, a weight of 40,000 pounds
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