FILE - In this July 31, 2012 file photo, Air Combat Command's director of operations Maj. Gen. Charlie Lyon, left, holds a valve during a news conference at the Pentagon in Washington t

 

              FILE - In this July 31, 2012 file photo, Air Combat Command
FILE - In this July 31, 2012 file photo, Air Combat Command's director of operations Maj. Gen. Charlie Lyon, left, holds a valve during a news conference at the Pentagon in Washington to provide an update on the Air Force Scientific Advisory Board study into life support systems installed on the F-22 and operations. The U.S. is hoping a dozen F-22 stealth fighters now roaring through the skies of southern Japan will prove its most prized combat aircraft is finally ready to resume full operations after years of investigations into why its pilots were getting dizzy and disoriented. But questions remain over whether the Air Force has taken enough action to fix a potentially bigger problem - the shriveling of programs to test cockpit life support systems after nearly 20 years of budget cuts, downsizing and outsourcing. (AP Photo/Manuel Balce Ceneta, File)