A U.S. Airman participates in a heavy drop exercise during Saber Junction 16, April 5, 2016, at Aviano Air Base, Italy. The exercise involved the 173rd Airborne Brigade and 16 allied and European nations conducting land operations in a joint, combined environment and to promote interoperability with participating nations. (U.S. Air Force photo by Airman 1st Class Cary Smith/Released)