Senior Airman Matthew Begeman, 28th Operation Support Squadron intelligence weapons and tactics technician, shovels snow off of the sidewalk outside the 28th Bomb Wing Headquarters building at Ellsworth Air Force Base, S.D., April 11, 2013. Winter storm Walda hit Box Elder and the surrounding areas, leaving Ellsworth with approximately 21 inches of snow after two days. (U.S. Air Force photo by Airman 1st Class Anania Tekurio/Released)