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U.S. Space Force Tech. Sgt. Alexander Hamilton (center), the lead range technician for 25th Space Range Squadron, in support of U.S. Space Command, sets up a communications satellite with his Australian counterparts July 15 at Lavarack Barracks in Queensland, Australia, during Exercise Talisman Sabre 21. TS21 is Australia’s largest military exercise with the U.S. and is a demonstration of the strong alliance underpinned by deep levels of cooperation and trust built over decades of operating and training together.