One of a kind work Published Jan. 28, 2003 ALTUS AIR FORCE BASE, Okla. (AFPN) -- Staff Sgt. Harold DeYoung levels one of four bolts that will anchor the legs of a glide slope antenna tower here. DeYoung is with the 738th Engineering Installation Squadron from Keesler Air Force Base, Miss., and part of a team installing an instrument landing system at Altus. The squadron is the only unit of its kind in the Air Force. (Photo by Master Sgt. Scott Johnson)