They also found a surface-to-air rocket that could take down a helicopter.

CNN: U.S. Marine killed in Anbar offensive

Armadillo came close to winning the X Prize Foundation's Northrop Grumman Lunar Lander Challenge last year by flying an alcohol-fueled rocket 150 feet in the air to a landing pad 300 feet away.

FORBES: Magazine Article

Northrop Grumman (nyse: NOC - news - people ) Lunar Lander Challenge last year by flying an alcohol-fueled rocket 150 feet in the air to a landing pad 300 feet away.

FORBES: Rocket Man

Its disruptive technology is a novel air-breathing and rocket engine that would enable the ship to go to space in one leap.

BBC: Skylon: Ending 40 years of hurt

Now he is preparing to launch Starchaser 3A after displaying his home-made rocket at an international air show.

BBC: Rocket man chases a dream