Sgt. Sean A. Walker, a native of Port Lavaca, Texas, is an administration personnel chief at Fleet Readiness Center East aboard Marine Corps Air Station Cherry Point. He services the more than 40 Marines attached to the Naval command. - Sgt. Sean A. Walker, a native of Port Lavaca, Texas, is an administration personnel chief at Fleet Readiness Center East aboard Marine Corps Air Station Cherry Point. He services the more than 40 Marines attached to the Naval command.