Tech. Sgt. Steven Chaco, 56th Aerial Port Squadron special handling supervisor, writes the center of balance marking on a Delaware Army National Guard truck during joint training at Dover Air Force Base, Delaware, March 29, 2021. The training focused on providing rapid global airlift through the integration of U.S. Air Force Airmen and Delaware National Guard Soldiers. (U.S. Air Force photo by Senior Airman Christopher Quail)