Swimmers take their marks for the 50 meter race during the 2014 Marine Corps Trials aboard Camp Pendleton, Calif., March 12. The Marine Corps Trials is an 8-sport invitational involving four competing teams comprised of active duty Marines, veterans and international service members. The competition provides opportunities for wounded, ill and injured service members to train as athletes, while increasing their strength so they can continue their military service or develop healthy habits for life outside the service.