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A U.S. Air Force KC-135 Stratotanker from the 909th Air Refueling Squadron refuels a Japan Air Self-Defense Force F-15J Eagle over the Pacific Ocean during Exercise Southern Beach, Oct. 28, 2021. Bilateral training exercises like Southern Beach help build trusting relationships among foreign and domestic forces, ensuring allies are able to come together to effectively respond to demanding scenarios and execute high-end missions in defense of a free and open Indo-Pacific region.