Walk Around
Col. Mark Weatherington, 28th Bomb Wing commander, performs a walk around inspection of a B-1B with Airman 1st Class Daryl Ackerman, 37th Bomb Squadron crew chief at Ellsworth Air Force Base, S.D., Jan. 17, 2012. Inspections are performed to ensure landing gear pins and handles are properly removed and stored, while searching for any foreign object debris around the aircraft, and checking for leaks that may impede flight. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)