The ground shakes and kicks up dust when the heart-pounding sound of artillery booms through the area during a calibration exercise Jan. 6. Soldiers from the Battery B, 2nd Battalion, 11th Field Artillery Regiment, out of Schofield Barracks, Hawaii, prepare their M777A2 Light-Weight Howitzer for battle. During this exercise, Soldiers cleared a target area and fired several miles down range as quickly and accurately as possible. In true Army fashion, the Soldiers said they turned the exercise into a competition against their unit counterparts. (U.S. Army Photo/Spc. Aaron L. Rosencrans, 2nd Stryker Brigade Combat Team)