U.S. Air Force Senior Airman Mark School, 820th Rapid Engineer Deployable Heavy Operational Repair Squadron Engineer electrician from Nellis Air Force Base, Nev., locates buried electrical lines at Langley Air Force Base, Va., July 18, 2014. REDHORSE squadrons provide heavy-repair capability and construction support when requirements exceed normal base civil engineer squadron capabilities. (U.S. Air Force photo by Airman 1st Class Areca T. Wilson/Released)