Step into a wind tunnel, a 120 mph wall of air strong enough to support human weight, and delight in the sensation of freefall without the need to jump out of a plane. Start off with a safety briefing from an instructor before being kitted out with a specialist flight suit. Then take a big step into the wind tunnel with the instructor close at hand and ascend into the air for two electrifying 60-second sessions of flying. As a comparison, a skydive from 10,000 feet gives around 30 seconds of freefall. What's more, for some participants the expert instructor jumps onto the flow to perform some logic-defying acrobatics. The flying session ends with a debrief