U.S. Air Force Senior Airman Walter Smith, 633rd Civil Engineer Squadron water and fuel systems maintenance technician, uses a pick to expose a damaged pipe at Langley Air Force Base, Va., Nov. 6, 2015. The CES team repaired the damage that was a result of two failed pipe restraint systems beneath concrete floors. (U.S. Air Force photo by Staff Sgt. John D. Strong II/Released)