ELLSWORTH AIR FORCE BASE, S.D. -- Airmen from the 28th Aircraft Maintenance Squadron Ellsworth Air Force Base, S.D., prepare a B-1B Lancer to support Operation Odyssey Dawn, March 27, 2011. Their work was made especially difficult by severe weather conditions including snow, ice and freezing fog. (U.S. Air Force photo/Staff Sgt. Marc I. Lane)