Air Force Academy Graduation (23 images)

Newly graduated cadets celebrate after taking their oath of office as commissioned officers of the United States Air Force at the United States Air Force Academy graduation ceremony in Colorado Springs, Colorado on May 28, 2008. (UPI Photo/Gary C. Caskey)

Cadets salute U.S. President George W. Bush as he arrives at the commencement ceremony for the Air Force Academy in Colorado Springs, Colorado on May 28, 2008. (UPI Photo/Mark Reis/POOL)

U.S. President George W. Bush (C) poses for a photo with members of the 2008 Thunderbirds, the United States Air Force Air Demonstration Squadron, prior to President Bush's commencement address at the U.S. Air Force Academy in Colorado Springs, Colorado on May 28, 2008. From left to right, Thunderbirds commander/leader Lt. Col. Greg Thomas, Maj.Charla Quayle, Lt. Col. Rob Skelton, Maj. Samantha Weeks, Maj. Kirby Ensser, Capt. Gifford Ploetz, Maj. Chris Austin, Maj. Scott Poteet, Maj. T. Dyon Douglas, Maj. Tony Mulhare, Capt. Amy Glisson and Capt. Elizabeth Kreft. (UPI Photo/Eric Draper/White House)