U.S. paratroopers of the 1st Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade arrive at Aviano Air Base, Italy, after five months training in Lithuania during Operation Atlantic Resolve, on board a U.S. Air Force West Virginia Air National Guard C-130 Hercules aircraft, Nov 3, 2015. The 173rd Airborne Brigade is the Army Contingency Response Force in Europe, capable of projecting ready forces anywhere in the U.S. European, Africa or Central Commands areas of responsibility within 18 hours. (U.S. Army photo by Visual Information Specialist Paolo Bovo/Released)