Air action from Vietnam. "Profile of the two-bladed, single engine attack helicopter manufactured by Bell. The AH-1 is also sometimes referred to as the HueyCobra or Snake. The AH-1 was the backbone of the United States Army's attack helicopter fleet, but has been replaced by the AH-64 Apache in Army service.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 several other users. The AH-1 twin engine versions remain in service with United States Marine Corps as the service's primary attack helicopter."
