. "509th Operations Group"@en . . "Defensor Vindex- Defender Avenger (Approved 10 July 1952)" . "1944Z"^^ . "4 squadrons" . . . . "The 509th Operations Group (509 OG) is the flying component of the United States Air Force 509th Bomb Wing (509 BW), assigned to Whiteman Air Force Base, Missouri. It is equipped with all 20 of the USAF's B-2 Spirit stealth bombers."@en . "B-2 Combat and Training Operations" . "1952Z"^^ . .