The oldest attack helicopter ever fielded by the U.S. military is also the first attack helicopter: The Bell AH-1 Cobra, which first entered service in 1967. Born out of the Vietnam War, the AH-1 was ...

Plenty of downright ancient helicopters are still in use, and if the top brass has anything to say about it, many may still have a good decade or so of duty left. Here are 10 of the oldest helicopters ...