The apparatus he used, known as the Jetlev R200, is a water-propelled jet pack that can shoot a person 30 feet into the air and run for some 4 hours.

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Bill Gates in his private jet flies with more personal space than does Joe Six-Pack when making a similar trip on a commercial jetliner.

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"It's a bonding experience, one that very few people in the world have ever had, " said trainer Dean O'Malley, adding that first-time users typically managed to reach heights of 10 to 15 feet with the jet pack.

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