Senior Airman Spencer Hensinger, 28th Maintenance Squadron aircraft structural maintenance technician, uses a drill to remove fasteners from a B-1 bomber crew entryway door during maintenance at Ellsworth Air Force Base, S.D., April 3, 2012. These repairs allowed the crew entry door to seal properly. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)