Airman 1st Class Kam Watt, 4th Airlift Squadron loadmaster, looks over a pre-flight checklist inside a C-17 Globemaster III before taking off from Iraq, Dec. 20, 2019. Loadmasters communicate with pilots upstairs in the flight deck via radio communications headsets. (U.S. Air Force photo by Airman 1st Class Mikayla Heineck)