Airman Dylan Johnson, a crew chief with the 446th Aircraft Maintenance Squadron, fixes a part on a C-17 Globemaster III Jan. 3, a day with a low of 19 degrees Farenheit, on McChord Field, Wash. Maintainers like Johnson must complete their mission even in the cold, sometimes handling small tools with bulky gloves for warmth. (U.S. Air Force Photo/Staff Sgt. Rachael Garneau)