BAGRAM AIR BASE, Afghanistan -- Staff Sgt. Scott Haas drives a stake during construction of a new A-10 Thunderbolt II maintenance building's concrete driveway. Sergeant Haas is a civil engineer with the 455th Expeditionary Operations Group, and he is deployed from Ellsworth Air Force Base, S.D. (U.S. Air Force photo by Master Sgt. Jeff Szczechowski)