A U.S. Marine with the 1st Battalion, 5th Marine Regiment, Marine Rotational Force-Darwin performs a rope climb during a meritorious sergeant board at Robertson Barracks, Darwin, Australia, April 17, 2014. Marines with the unit performed a physical fitness test, a 200-meter swim and a rope climb to compete for a meritorious promotion, along with a written test to examine their knowledge of weapons systems and a uniform inspection.