The Department of Defense announced today the death of two Marines who were supporting Operation Enduring Freedom. The following Marines died May 11 while supporting combat operations in Helmand province, Afghanistan: Cpl. Jeffery W. Johnson, 21, of Tomball, Texas, and . Sgt. Kenneth B. May, Jr., 26, of Kilgore, Texas. Johnson and May were assigned to 3rd Battalion, 1st Marine Regiment, 1st Marine Division, I Marine Expeditionary Force, Camp Pendleton, Calif.