The swarms started on Dec. 7, 2023. Drones, some as large as 20 feet long, flew at night over the Air Combat Command headquarters with its squadrons of advanced F-22 Raptor fighters.
CNN traveled across the country with a secretive drone unit as it prepared to launch more than 100 drones into Russia in a strike targeting a weapons depot.
Ukraine is blinding Russia's long-range strike capability by knocking down its scout drones with FPV interceptors. It is a fast moving technology contest for high stakes.