U.S. Air Force Staff Sgt. Jonathan Parrish, 67th Aerial Port Squadron Port Dawg Challenge participant, secures a cargo load during the pallet build up challenge at Dobbins Air Reserve Base, Ga., June 17, 2015. The Port Dawg Challenge was created to enhance and maintain the camaraderie, esprit de corps and prestige of aerial port Airmen while promoting professionalism, leadership, training and communication between "Port Dawgs." (U.S. Air Force photo by Senior Airman Josh Slavin/Released)