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The Bell AH-1 Cobra is an attack helicopter. It shares a common engine, transmission and rotor system with the older UH-1 "Huey". It is variously called the "HueyCobra," "SeaCobra," "SuperCobra," "Whiskey Cobra," "Zulu Cobra," "Viper," or "Snake"; depending on the model.
The AH-1 was once the backbone of the United States Army's attack helicopter fleet, but has been replaced by the AH-64 Apache in Army service. Upgraded versions continue to fly with the United States Marine Corps (AH-1W) and several other users.