KC-135 crew chiefs dedicated to nonstop mission
U.S. Air Force Airman 1st Class Erroll James Ponio, 100th Aircraft Maintenance Squadron crew chief, performs gaseous oxygen servicing during pre-flight inspection Sept.16, 2015 on RAF Mildenhall, England. Crew chiefs assigned to the 100th AMXS execute aircraft inspections 24/7, rain or shine. (U.S. Air Force photo by Airman 1st Class Justine Rho/released)