A Canadian man who parachuted from a flying lawn chair powered by helium balloons was facing police charges on Monday. Daniel Booria of Calgary was charged with mischief after he tied more than 100 helium-filled balloons to a lawn chair on Sunday evening, strapped a parachute on his back and set sail over the city in a publicity stunt intended to advertise a cleaning-products company. The 26-year-old was intending to steer the improvised aerial device over the Calgary Stampede, the city’s annual rodeo and festival that attracts over a million visitors a year, with an eye to parachuting onto the grounds.