As others have mentioned, it is a big mistake to go into a USAF flying career with your primary decisionmaking item being your desire to fly for an airline when you get out. That is NOT the correct mentality. Flying for the military is a calling...God only knows there is enough crap to deal with these days in this profession that it is certainly not the "easy way" to get yourself to an airline job 10 years from now.

If you mention that at UPT, you will absolutely get killed by your IPs. In your operational squadron, mentioning the "A-word" can get you on the slow-train to upgrades and good deal TDYs. Guys who aren't interested in an airline career, but who ARE interested in flying and fighting for their country, may not be impressed with your act.

No matter what you end up flying -- fighter, bomber, tanker, transport -- it will be a challenging and rewarding job in and of itself. Also regardless of which airframe you end up in (outside of helos), you will probably finish your ADSC with enough time to apply at any of the Majors.