Skydiving instructor Chris Gray from the U.S. freefalls during a skydiving session in the Spacewalk vertical wind tunnel in Abu Dhabi October 11, 2008. Spacewalk, measuring at 3.5 meters wide and 7 meters high, is the first indoor skydiving facility in the Middle East, with winds up to 150km per hour propelling the divers off the floor. REUTERS/Jumana El Heloueh (UNITED ARAB EMIRATES)