Rolls was also a trained engineer who was a promising pilot, the first to complete a double crossing of the English Channel.

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He accused the Liberal Democrats of "double crossing" Prime Minister David Cameron and making "an attempt to gerrymander our constitution for political reasons".

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Neither wants to throw away any electoral votes by double-crossing local parties.

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In 1978, three American balloonists, Ben Abruzzo, Maxie Anderson and Larry Newman, completed the first crossing of the North Atlantic in their balloon, Double Eagle II.

CNN: Monday,