U.S. Marine Corps Maj. Clark Smith, the operations

U.S. Marine Corps Maj. Clark Smith, the operations officer with the Ground Combat Element, Marine Rotational Force – Darwin (MRF-D), speaks with Brigadier Andrew Hocking, Commander of 7th Combat Brigade, Australian Army, during the opening ceremony for Exercise Southern Jackaroo, Shoalwater Bay Training Area, Queensland, Australia, May 19, 2019. Southern Jackaroo is a trilateral exercise hosted by 6th Battalion, Royal Australian Regiment, in conjunction with MRF-D Marines and service members from the Japanese Ground Self-Defense Force. The exercise will focus on collaborative training in order to exercise interoperability between the U.S. and partnered nations. (U.S. Marine Corps photo by Staff Sgt. Jordan Gilbert)