First Lt. Caitlin Curran reviews operating instructions Oct. 17, 2011, during Exercise Thracian Fall 2011 in Plovdiv, Bulgaria. Thracian Fall is an off-station training exercise designed to enhance interoperability between U.S. and Bulgarian air forces as well as build partnerships with paratroopers from both. Curran is a pilot assigned to the 37th Airlift Squadron from Ramstein Air Base, Germany. (U.S. Air Force photo/Senior Airman Stephen J. Otero)