 Marines with Company B, battalion landing team First Battalion, Fourth Marines, 31st Marine Expeditionary Unit, undertake the jungle endurance course following two weeks of jungle warfare training at Camp Anzalvis. Using skills learned during the course, the Marines overcome various obstacles offered by the thick Okinawan jungle. Last time we trained up was in a mountainous environment up in Bridgeport, really cold, getting thrown in the jungle completely different, getting this use of different things. The Marines demonstrate their skills in repelling, river crossing, navigation and casualty transportation, all of which are tested during the four mile course. The course requires more than three hours to complete and forces the Marines to use small unit leadership to determine the best way through an obstacle and out of the jungle. Corporal Jonathan Wright, Camp Anzalvis, Okinawa.