Air Force Academy Graduation (23 images)

A graduating Air Force cadets leaps into the arms of a fellow graduate after receiving his diploma at the United States Air Force Academy graduation ceremony in Colorado Springs, Colorado on May 28, 2008. (UPI Photo/Gary C. Caskey)

Graduating cadets throw their caps into the air as the Air Force Thunderbirds execute a flyover at the United States Air Force Academy graduation ceremony in Colorado Springs, Colorado on May 28, 2008. (UPI Photo/Gary C. Caskey)

U.S. President George W. Bush (R) receives the "Falcon" honorary award from the cadet wing at the United States Air Force Academy graduation ceremony in Colorado Springs, Colorado on May 28, 2008. (UPI Photo/Gary C. Caskey)

An Air Force cadet starts the first of several back flips after receiving his diploma at the United States Air Force Academy graduation ceremony in Colorado Springs, Colorado on May 28, 2008. (UPI Photo/Gary C. Caskey)