FORT A.P. HILL, Va. -- �Back blast area all secure � Rocket,� shouts Lance Cpl. Joseph P. Adams Jr. (center) and Pfc. Robert Challener (right), assaultmen, Company K, 3rd Battalion, 6th Marine Regiment, 2nd Marine Division, II Marine Expeditionary Force, before a high explosive round is fired downrange, while Staff Sgt. Jerome Owens (top), platoon sergeant, 2nd Platoon, Company I, and range safety officer, shields his ears from the blast during a firing exercise here Dec. 1. Companies I, K and L participated in a Shoulder-launched Multipurpose Assault Weapon, or SMAW, exercise mainly aimed at familiarizing the junior Marines with employing it in combat situations.