Spc. Anthony D. Nicastro, a M1A2 Abrams Main Battle Tank gunner assigned to Company D, 2nd Battalion, 7th Infantry Regiment, 1st Armored Brigade Combat Team, 3rd Infantry Division, opens a quart of engine oil to be used during his daily maintenance on his assigned tank May 21, 2015 at the Bucierz Range Complex near Camp Konotop, Poland, for use in support of 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 .)