Paratroopers assigned to the 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division, U.S. Army Alaska, conduct a heavy drop and parachute assault on Malemute drop zone at Joint Base Elmendorf-Richardson, Alaska, Friday, March 20, 2015, during Operation Spartan Valkyrie. The Soldiers held the drop zone and assaulted follow-on objectives while elements of the brigade's 2nd Battalion, 377th Parachute Field Artillery Regiment fired 105 mm howitzers. (U.S. Air Force photo/Justin Connaher)