U.S. Air Force Airman 1st Class Krystal Adamson, 380th Expeditionary Aircraft Maintenance Squadron crew chief, reviews technical orders during routine maintenance on an RQ-4 Global Hawk unmanned aerial vehicle at Al Dhafra Air Base, United Arab Emirates, Nov. 3, 2020. Technical orders detail maintenance procedures step-by-step, and help maintenance professionals ensure they perform tasks correctly every time. (U.S. Air Force photo by Staff Sgt. Zade Vadnais)