PATROL BASE DASH, Helmand province, Islamic Republic of Afghanistan -- Marines from 3rd Platoon, Company A, 1st Battalion, 5th Marine Regiment, present a rifle salute before emplacing the battlefield memorial during a memorial service for Lance Cpl. Sean M. O’Connor at Patrol Base Dash, June 21. The Marines of 1/5 paid tribute to the life and service of O’Connor an M-249 Squad Automatic Weapon machine gunner with 3rd Plt., Company A. Prior to coming to Company A, 1/5, O’Connor was assigned to the Color Guard Plt., Company A, Marine Barracks 8th and I, where he performed more than 150 ceremonies and funerals. He was killed in action June 12 on a foot patrol while conducting combat operations against enemy forces in Sangin. O’Connor was born in Oceanside, Calif., and raised in Douglas, Wyo., where he graduated from Douglas, High School in 2007 before enlisting in the Marine Corps.