Pfc. Justin Oates and Cpl. David Knight, assigned to Lima Co., 3rd Battalion, 3rd Marine Regiment, explain the endurance course, a grueling culminating event that builds upon the skills the learned at the Jungle Warfare Training Center, Okinawa, Japan. The Hawaiibased battalion is attached to 4th Marine Regiment, 3rd Marine Division, III Marine expeditionary Force as part of the unit deployment program. Oates is a St. Louis, Mo., native and Knight is a Rocklin, Calif., native.