sentences:  He proposed that its man-lifting capabilities be used for military observation.After a stunt in which he crossed the English Channel in a boat drawn by a kite, he attracted enough interest from the Admiralty and the War Office for them to allow him to conduct trials between 1904 and 1908.He lifted a passenger to a new record height of 1,600 ft (488 m) on the end of a 4,000 ft (1,219 m) cable.