(From left) U.S. Air Force Airman 1st Class Patrick Henry Alexander and Staff Sgt. William Thomas, 577th Expeditionary Prime Base Engineer Emergency Force Squadron troop constructions, flatten freshly poured cement at Bagram Airfield, Afghanistan May 24, 2014. Members from the squadron, poured cement to secure poles for a new security fence around the airfield. The 577th EPBS brings together civil engineering Airmen from across several specialties to perform forward deployed construction work. Henry Alexander is deployed from Davis Monthan, Arizona and a native of Gainesville, Florida. Thomas is deployed from Ramstein Air Base, Germany and a native of Cincinnati, Ohio. (U.S. Air Force photo by Staff Sgt. Evelyn Chavez)