Combat Center Marines and sailors participate in the Single Marine Program’s weekly pool tournament held at the 5th Street Zone, July 16, 2015. The event hosted 11 competitors from different units. (Official Marine Corps photo by Pfc. Levi Schultz/Released) - Combat Center Marines and sailors participate in the Single Marine Program’s weekly pool tournament held at the 5th Street Zone, July 16, 2015. The event hosted 11 competitors from different units. (Official Marine Corps photo by Pfc. Levi Schultz/Released)