Golden, Colo., native, Staff Sgt. Douglas Stephens, a tank commander assigned to Company D, 2nd Battalion, 7th Infantry Regiment, 1st Armored Brigade Combat Team, 3rd Infantry Division, shows the proper grenade throwing procedures to participants of the grenade assault course qualification range held at Camp Konotop, Poland, April 22, 2015. The Soldiers are part of Operation Atlantic Resolve, an ongoing multinational partnership focused on joint training and security cooperation between NATO allies. (U.S. Army photo by Sgt. Brandon Anderson, 13th Public Affairs Detachment .)