Senior Airman Melissa Howerton and Senior Airmen Darwin Polo, 437th Aerial Port Squadron air transportation specialists, prepare to cover a pallet with a protective sheet Feb. 9, 2015, at Joint Base Charleston, S.C. The need for safe, precise, reliable airlift never stops, and therefore neither do the “Port Dawgs.” They work through the night to process cargo and load it on and off Charleston’s fleet of C-17 Globemaster IIIs. (U.S. Air Force photo/Airman 1st Class Clayton Cupit)