The decay is most pronounced in the U.S. Air Force, the service that would have to take the lead in coping with urgent threats posed by Russia, China and other industrialized countries. After 20 years of neglect, the Air Force’s fleet of combat aircraft is older than the Navy’s fleet of warships. During his four-year stint as defense secretary, current Vice President Dick Cheney killed the service’s cold-war fighter programs, terminated the next-generation B-2 bomber at a mere 20 planes, slashed the future C-17 cargo plane program, and decimated every other facet of U.S. air power. Clinton’s defense secretaries added back some planes that Cheney had cut, but delayed and decreased the next-generation F-22 fighter that was the centerpiece of plans for future air dominance. Then Preident Bush’s long-serving Defense Secretary Donald Rumsfeld launched the entire U.S. Department of Defense on a leap-ahead trajectory to military transformation that ignored air power for another six years.