Representatives of the Canadian Land Forces stand at attention during the opening ceremonies of the 2013 Marine Corps Trials. Marines from the Wounded Warrior Regiment, in addition to veterans and allies, are competing in the Trials, which include swimming, wheelchair basketball, sitting volleyball, track and field, archery, cycling and shooting. The top 50 performing Marines will earn the opportunity to compete on the All-Marine Warrior Games Team in Colorado Springs, Colo., in May.