200605-F-YZ899-0001
Staff Sgt. Alex Comfer, 914th Maintenance Squadron hydraulics technician, prepares to remove the bolt that holds the boom arm in place on a KC-135R Stratotanker aircraft at Niagara Falls Air Reserve Station, N.Y., June 5, 2020. Maintainers are required to perform extensive periodic inspections on all aircraft, which can last for several weeks. (U.S. Air Force photo by Peter Borys)