Marines lend a hand and some muscle to a group of students during a tug-of-war competition at Jefferson Middle School, March 29. Camp Pendleton’s Single Marine Program and Marine volunteers tested a pilot fitness challenge to promote physical education while giving back to the community. - Marines lend a hand and some muscle to a group of students during a tug-of-war competition at Jefferson Middle School, March 29. Camp Pendleton’s Single Marine Program and Marine volunteers tested a pilot fitness challenge to promote physical education while giving back to the community.