U.S. Air Force Capt. Peter Wolber, 37th Airlift Squadron chief of scheduling, poses for a photo in Plovdiv, Bulgaria, July 20, 2018. While participating in Thracian Summer 18, a bilateral exercise between the U.S. and Bulgaria, Wolber oversaw operations as mission commander. During the exercise, Wolber maintained and exercised oversight on support and operations during Thracian Summer to ensure objectives were met. (U.S. Air Force photo by Staff Sgt. Jimmie D. Pike)