The U.S. Department of Defense announced Sgt. Thomas R. MacPherson, 26, died from small arms fire while on patrol during combat operations on Friday.
On his fourth deployment to Afghanistan, MacPherson was serving as a mortarman and team leader in the Andar district. The Los Alamitos High School graduate had previously served in Iraq shortly after enlisting in the Army in 2007.
MacPherson was assigned to the 2nd Battalion, 75th Ranger Regiment of the U.S. Army Special Operations Command.