Paratroopers assigned to the 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division, U.S. Army Alaska, practice a forced-entry parachute assault on Malemute drop zone at Joint Base Elmendorf-Richardson, Alaska, March 18, 2015, as part of a larger tactical field exercise. The Soldiers are part of the Army’s only Pacific airborne brigade with the ability to rapidly deploy worldwide, and are trained to conduct military operations in austere conditions. (U.S. Air Force photo/Alejandro Pena)