Shield AI is acquiring Echodyne, whose radars detect and track drones, in a deal worth up to $5.3 billion that is expected to close in early 2027. Of that, $4.8 billion is due at closing and $500 million depends on performance targets. Shield also raised $2.5 billion in Series H funding, and Echodyne will become a unit of its mission systems business, giving Shield an in-house counter-drone product.