Cpl. Jason Brown cleans his M-203 40 mm grenade launcher on May 25, 2001, before a battalion live fire exercise at Shoalwater Bay Training Area, Queensland, Australia, for Exercise Tandem Thrust 2001. Brown, from L Company, 3rd Battalion, 3rd Marines, is deployed for Tandem Thrust, which is a combined military training exercise involving more than 18,000 U.S., Australian, and Canadian personnel who are training in crisis action planning and execution of contingency response operations.