Paratroopers with the 2nd Battalion, 377th Parachute Field Artillery Regiment, 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division, fire 105 mm howitzers during a night-fire training event Dec. 10, 2014, at Joint Base Elmendorf-Richardson, Alaska. Paratroopers of the unit are using the dark and Arctic conditions to gain proficiency in operating in austere environments during the multi-day training exercise. (U.S. Army photo by Sgt. Eric-James Estrada/Released)