Quote Originally Posted by Stickman View Post
Why does the Army fly Apaches and the USMC flies a Super Cobra and Viper variants?
The Marine Corps wants two engines for greater overwater safety and increased payload. Their Hueys also had twin engines.

Unsure about the Cobra and the Hueys, but to my knowledge most other USMC and Navy helicopters have rotor brakes.

The Viper and the Venom (UH-1Y) also have four rotors.