The Black Hawk is the US's most important combat helicopter, designed to move quickly into hostile environments and deliver or collect troops and armaments.

BBC: News | In Depth | Military Fact Files

While the project was a success, the military soon lost interest because the shape change was too slow for the demands of a combat helicopter.

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The prince, a veteran combat helicopter pilot, mingled with the 35-member British team and then sat on a gymnasium floor in a circle of 12 sitting volleyball team members, batting the ball around amid whoops and laughter.

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