Competitors take aim from the firing line to get acquainted with the compressed air pistols at the Marine Corps Trials aboard Camp Pendleton, Calif., March 4, 2014. The Marine Corps Trials is an 8-sport invitational involving four competing teams comprised of active duty Marines, veterans and international service members. Athletes will have the opportunity to compete in an eight-sport competition to include archery, shooting, wheelchair basketball, sitting volleyball, swimming, cycling, track, and field events.