U.S. Army paratroopers with the 173rd Airborne Brigade board a U.S. Air Force C-130 aircraft assigned to the 139th Airlift Wing, Missouri Air National Guard, during Saber Junction 18, at Ramstein Air Base, Germany, Sept. 19, 2018. Saber Junction 18 is the U.S. Army 173rd Airborne Brigade’s combat training center certification exercise, taking place on the Grafenwoehr and Hohenfels training areas. The U.S. Army Europe-directed exercise is designed to assess the readiness of the brigade to conduct unified land operations in a joint, combined environment and to promote interoperability with participating allies and partner nations. Saber Junction 18 includes nearly 5,500 participants from 20 ally and partner nations. (U.S. Air National Guard photo by Staff Sgt. Patrick Evenson)