A Marine AH-1W Super Cobra helicopter leaves the USS Essex LHD 2 to conduct patrols and air cover for American and Australian troops in the Shoalwater Bay military training area, in support of Exercise TANDEM THRUST. TANDEM THRUST 2001 a combined US, Australian, and Canadian military exercise for crisis action planning and execution of contingency response operations. The biannual exercise is held in the vicinity of Shoalwater Bay training area in Queensland, Australia