Cpl. Grant J. Walker, an Aliso Viejo, California native

Cpl. Grant J. Walker, an Aliso Viejo, California native and intelligence specialist assigned to Bravo Company, 1st Battalion, 3rd Marine Regiment, refers to a map during a land navigation course at the Jungle Warfare Training Center, aboard Camp Gonsalves, Okinawa, Japan, July 5, 2017. The Jungle Warfare Training Center provides individual and unit level training to increase survivability and lethality while operating in a jungle environment. The Hawaii-based battalion is forward deployed to Okinawa, Japan as part of the Unit Deployment Program. (U.S. Marine Corps photo by Cpl. Aaron S. Patterson/Released)