Ever wonder what it's like to free fall from a 12,500-foot drop zone? iFLY's vertical wind tunnel looks like something out of a 1980s sci-fi flick. Giant fans create a cushion of air that propels fliers skyward, at a speed adjusted to a flier's body weight, as professional guides coach participants through their flights. In fact, iFLY's wind tunnel is so realistic that professional skydivers and military personnel frequent the Lone Tree site for training purposes. A first-time flier package includes a pre-flight training session, all necessary flight gear, instruction and hands-on assistance. The experience takes an hour and a half start to finish, and fliers who want to soar toward the top of the tunnel can add on an exhilarating "high flight" for $9.95.