U.S. Air Force Airman 1st Class Joel Borja, 55th Aircraft Maintenance Unit dedicated crew chief, marshals a jet at Shaw Air Force Base, South Carolina, Jan. 15, 2020. Because of limited visibility in the cockpit, marshaling occurs so pilots can be signaled onto the runway safely. (U.S. Air Force photo by Airman 1st Class Destani K. Matheny)