U.S. Air Force Airmen from the 633rd Civil Engineer Squadron pour concrete for the new F-15 Eagle static display at Langley Air Force Base, Va., Oct. 17, 2014. The 633rd CES personnel are using this opportunity to enact a troop training project, where Airmen from multiple career fields within the 633rd CES perform the job instead of contractors. (U.S. Air Force photo by Senior Airman Austin Harvill/Released)