many ang pilots work for commercial airlines, but in the ang they may train to fly any of the aircraft in the usaf inventory, with the current exception of the b-1b lancer and b-52 stratofortress bombers, e-3 sentry awacs aircraft, kc-10 extender and the ac-130 gunship. the georgia air national guard and the kansas air national guard previously flew the b-1b lancer prior to converting to the e-8 joint stars and kc-135r stratotanker, respectively. in addition, the 131st fighter wing of the missouri air national guard transitioned from flying the f-15c/d eagle at st. louis international airport/lambert field air national guard station to the b-2 spirit at whiteman afb as an "associate" unit of the regular air force's 509th bomb wing and was re-designated as the 131st bomb wing.