It depends on the airplane. There are several delta-winged airplanes in existence. The F-102, F-106, XF-92A.

f-102 Delta Dagguer

Bush Senior fought in WWII as a torpedo plane pilot (flying the Avenger Torpedo Airplane) and was shot down in the Pacific...later rescued by a US submarine. Bush Junior flew an F-102 Delta Dagger intercepter with the Texas Air National Guard. The F-102 was deployed to Vietnam, and approximately 14 were lost there, one in air to air combat with a North Vietnamese MIG-21; however Bush Jr. did not serve in the Vietnam War.

Three 20th century US Presidents were in the USAR (US Army Reserves established in the 20th century): Harry Truman, Missouri Army National Guard (Artillery); Ronald Reagon, USAR/California Army National Guard (Cavalry); George Bush JUNIOR, Texas AIR National Guard (F-102 Delta Dagger jet).

With much controversy over Bush's Delta Dagger being an obsolete jet, thus his being assigned to it to avoid combat in Vietnam; the F-102 Delta Dagger did serve in combat during the war, as both a ground attack fighter-bomber and an air to air combatant. Approximately 14 Delta Daggers were lost in Vietnam, one in aerial combat with a NVAF MiG-21 (shot down by an air to air missile on 03 February 1968), the USAF pilot, LT Wiggins was killed. NVAF LT. Nguyen Van Coc from the 921st Fighter Regiment was credited with the aerial victory.

102 939 as of about 2009.