ORLANDO, FL -- The Air Force has briefed Defense Secretary Robert Gates on its desire to buy more F-22As, according to Chief of Staff Gen. Norton Schwartz. Schwartz said the revised study made different assumptions than those that underpinned the last Air Combat Command requirements study, which held that the service needed 381 Raptors. Right now, the Air Force's F-22A buy is caped at 183 jets. "We have looked at . . . in this current setting as opposed to...