Cpl. Julian Guerrero, personnel administrator, Headquarters Battalion, is a small business owner who is transitioning out of the Marine Corps. Guerrero originally joined the Marine Corps to pay respect to a friend who passed away. (U.S. Marine Corps photo by Sgt. Connor Hancock) - Cpl. Julian Guerrero, personnel administrator, Headquarters Battalion, is a small business owner who is transitioning out of the Marine Corps. Guerrero originally joined the Marine Corps to pay respect to a friend who passed away. (U.S. Marine Corps photo by Sgt. Connor Hancock)