Lance Cpl. Victor Balbuena traverses the pit-and-pond obstacle of the endurance course July 15 at the Jungle Warfare Training Center on Camp Gonsalves. The pit-and-pond is one of 31 different obstacles the Marines must navigate through during the 3.8-mile endurance course. Balbuena is a water support technician with MWSS-172. Photo by Lance Cpl. Donald T. Peterson - Lance Cpl. Victor Balbuena traverses the pit-and-pond obstacle of the endurance course July 15 at the Jungle Warfare Training Center on Camp Gonsalves. The pit-and-pond is one of 31 different obstacles the Marines must navigate through during the 3.8-mile endurance course. Balbuena is a water support technician with MWSS-172. Photo by Lance Cpl. Donald T. Peterson