U.S. Air Force Airman Nahom Tumalisan, 633rd Civil Engineer Squadron electrical systems technician, wades through water while checking electrical systems during Hurricane Sandy at Langley Air Force Base, Va., Oct. 29, 2012. Joint Base Langley-Eustis implemented changes to the base operating status and infrastructure protection measures to mitigate storm damage. (U.S. Air Force photo by Airman 1st Class Teresa Aber/Released)