U.S. Marines with 1st Battalion 4th Marine Regiment,

U.S. Marines with 1st Battalion 4th Marine Regiment, Marine Rotational Force – Darwin, and Australian soldiers with 5th Royal Australian Regiment, Australian Army, Australian Defense Force, listen to a rehearsal of concept walkthrough that is being given before exercise Talisman Sabre 15 on July 6, in Bradshaw, Northern Territory, Australia. Talisman Sabre 15 is a biennial exercise that provides an invaluable opportunity for nearly 30,000 U.S. and Australian defense forces to conduct operations in a combined, joint and interagency environment that will increase both countries’ ability to plan and execute a full range of operations from combat missions to humanitarian assistance efforts. (U.S. Marine Corps Photo by MCIPAC Combat Camera Lance Cpl. Osvaldo L. Ortega III/Released)