ELLSWORTH AIR FORCE BASE, S.D. - Airman 1st Class Eli Goff, 28th Operations Group air traffic controller, checks his wiper blades for safety during the winter season, Nov. 17. Wiper blades should be checked often during the winter, so make sure the cold weather has not cracked the blades. (U.S. Air Force photo/Senior Airman Anthony Sanchelli)