Senior Airman Emily Mitchell and Staff Sgt. Joshua Nelson, both 37th Airlift Squadron loadmasters sit on the ramp of a C-130J Super Hercules during a formation flight during Exercise Thracian Summer 2016 July 17, Plovdiv, Bulgaria. Through Exercise Thracian Summer, the U.S. and Bulgaria will enhance their mutual ability to work together, with other NATO nations, and with key partners on regional security (U.S. Air Force photo/Senior Airman Nicole Keim)