Master Sgt. William Pook (right), a reservist assigned to the 633rd Civil Engineer Squadron, and close friend retired Lt. Col. David Pacheco, watch a slideshow of photos from Pook’s career during his retirement ceremony at the squadron’s Emergency Management flight warehouse at Langley Air Force Base, Va., Sept. 23, 2011. Pook enlisted in 1971 while America was still entrenched in the Vietnam War. (U.S. Air Force photo by Senior Airman Jason J. Brown/Released)