U.S. Air Force Airman 1st Class Raymond Whitton, 380th Expeditionary Aircraft Maintenance Squadron crew chief, removes a fuel filter from an RQ-4 Global Hawk unmanned aerial vehicle at Al Dhafra Air Base, United Arab Emirates, Nov. 3, 2020. Regular maintenance by skilled professionals, such as the replacement of a fuel filter, ensures aircraft stay in good working condition so they are ready to execute the mission at a moment’s notice. (U.S. Air Force photo by Staff Sgt. Zade Vadnais)