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Making A Chopper Disappear

CBS News ' Chris Wragge speaks with national security correspondent David Martin about one of the U.S. helicopters that crash-landed in the raid on Osama bin Laden's compound. As pictures of the wreckage emerged on the Internet, some have noticed previously top-secret stealth technology on the Blackhawk.

CBS News' Chris Wragge speaks with national security correspondent David Martin about one of the U.S. helicopters that crash-landed in the raid on Osama bin Laden's compound. As pictures of the wreckage emerged on the Internet, some have noticed previously top-secret stealth technology on the Blackhawk. Martin says that the military went to great lengths to ensure the chopper's stealthiness, such as adding more rotor blades, which reduces noise, but also decreases lift.

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