Sweepers
John Smith, Garth McClain and Moe Morgan, civilian contractors, remove snow from the runway at Grissom Air Reserve Base, Ind., Jan. 25, 2014, using multipurpose sweepers. After historic January snowfalls, civilian contractors have had to work hard to clear snow from Grissom's flightline so aircraft could continue to take off. (U.S. Air Force photo/Staff Sgt. Andrew McLaughlin)