U.S. Army Soldiers assigned to the Multi-Domain Effects Battalion, 2nd Multi-Domain Task Force, retrieve an Unmanned Surface Vessel (USVs) from the water during Arcane Thunder 25, 16 May, 2025. (U.S. Army photo by Spc. Jennifer Posy) Army weaves robo-boats, drones, balloons and C2 tech into multi-continent Arcane Thunder exercise The live-fire event, which took place in Europe and Arizona, was led by the Army's 2nd Multi-Domain Task Force. May 30, 2025 By Jon Harper