Clark Air Base is a Philippine Air Force base on Luzon Island in the Philippines, located 3 miles (4.8 km) west of Angeles City, and about 40 miles (64 km) northwest of Metro Manila. Clark Air Base was previously a United States military facility, operated by the U.S. Air Force under the aegis of Pacific Air Forces (PACAF) and their predecessor organizations from 1903 to 1991. The base covered 14.3 square miles (37 km2) with a military reservation extending north that covered another 230 square miles (600 km2).

The Philippine Air Force (PAF) is the aerial warfare service branch of the Armed Forces of the Philippines. Initially formed as part of the Philippine Army as the Philippine Army Air Corps (PAAC) in 1935, the PAAC eventually saw combat during World War 2 and was formally separated from the Army in 1947 as a separate service branch of the AFP under Executive Order No. 94. At present, the PAF is responsible for both defending Philippine airspace, and conducting aerial operations throughout the Philippines, such as close air support operations, combat air patrols, aerial reconnaissance missions, airlift operations, helicopter tactical operations, special operations, and aerial humanitarian operations, which includes search and rescue operations. The PAF has also carried out various missions within the country and abroad.