The Falkland Islands are a British overseas territory and, as such, rely on the United Kingdom for the guarantee of their security. The other UK territories in the South Atlantic, South Georgia and the South Sandwich Islands, fall under the protection of British Forces South Atlantic Islands (BFSAI), formerly known as British Forces Falkland Islands (BFFI), which includes commitments from the British Army, Royal Air Force and Royal Navy. They are headed by the Commander, British Forces South Atlantic Islands (CBFSAI), a brigadier-equivalent appointment that rotates among all three services.

RAF Mount Pleasant is a Royal Air Force station in the British Overseas Territory of the Falkland Islands. The airfield goes by the motto of "Defend the right" and is part of the British Forces South Atlantic Islands (BFSAI). Home to between 1,000 and 2,000 British military personnel, it is about 33 miles (53 km) southwest of Stanley, the capital of the Falklands, on the island of East Falkland. The world's longest corridor, 2,600 feet (800 m) long, links the barracks, messes, and recreational and welfare areas of the station, and was nicknamed the "Death Star Corridor" by personnel.