U.S. Airmen from the 633rd Civil Engineer Squadron move sandbags to various buildings to prevent flooding at Langley Air Force Base, Va., Oct. 26, 2012. Both Langley and Fort Eustis are preparing for Hurricane Sandy, which is expected to reach the Virginia border by 2 a.m., Oct. 29, 2012. (U.S. Air Force photo by Airman 1st Class Teresa Aber/Released)