Marines are fitted for recumbent bicycles during the 2014 Marine Corps Trials March 4. The fourth annual Marine Corps Trials will take place aboard Marine Corps Base Camp Pendleton, Calif., March 4-12. Athletes will compete in archery, cycling, shooting, swimming, track, field, sitting volleyball, and wheelchair basketball. The competition provides opportunities for the Marines to train as athletes, while increasing their strength so they can continue their military service or develop healthy habits for life outside the service.