22-year-old US Marine, Lance Corporal Sean M. N. O'Connor, from Douglas, Wyoming was killed in Helmand province on 12th June 2011 whilst conducting combat operations.
L-Cpl. O'Connor served with the 1st Battalion, 5th Marine Regiment, 1st Marine Division, I Marine Expeditionary Force, based at Camp Pendleton, California.
L-Cpl. O'Connor enlisted in the Marine Corps in May 2007. His personal service awards include the Purple Heart, Combat Action Ribbon, National Defense Service Medal, Global War on Terrorism Service Medal, Marine Corps Good Conduct Medal and Afghanistan Campaign Medal.