Sgt. Jacob W. Dofner, a McClelland, Iowa, native and

Sgt. Jacob W. Dofner, a McClelland, Iowa, native and an instructor with Battle Skills Training School, 2nd Marine Logistics Group, gives a demonstration on how to approach a dangerous area aboard Camp Lejeune, N.C., Feb. 27, 2013, during a training exercise. Marines with Engineer Operation Company, Marine Wing Support Squadron 274, out of Marine Corps Air Station Cherry Point, N.C., practiced room clearing techniques after hours of classroom instruction classroom instruction from instructors.