Semper Fit hosted a four-day camp for the children of Marine Corps Base Quantico with the goal of getting them interested in physical activity and healthy eating. Campers made tasty healthy snacks and did yoga, ran an obstacle course, made kites and took part in a water balloon toss, among other activities. - Semper Fit hosted a four-day camp for the children of Marine Corps Base Quantico with the goal of getting them interested in physical activity and healthy eating. Campers made tasty healthy snacks and did yoga, ran an obstacle course, made kites and took part in a water balloon toss, among other activities.