Unsung hero
Master Sgt. Christopher Tilstra, AFCEC force development manager, poses next to the entrance of the Air Force Civil Engineer Center. AFCEC provides tools, practices and professional support to maximize Air Force civil engineer capabilities in base and contingency operations. The staff comprises technical and professional experts in a variety of areas including engineering, emergency management, training, pavement analysis, fire protection, explosive ordnance disposal, aircraft arresting systems, computer automation and energy management. (U.S. Air Force photo by Airman 1st Class Cody R. Miller/Released)