The Strela-10 is a Soviet-era short-range surface-to-air missile system, often carried on an MT-LB armoured vehicle, and its gyroscope must spin up before the missile can track a target. This recording captures that preparatory whine, and it circulated online with a tongue-in-cheek caption about being the last sound a drone hears. War Thunder players and military footage editors picked it up because it instantly signals an incoming surface-to-air threat, and it remains useful for realistic tank, drone and air-defence edits where a generic alarm would feel less authentic.