W. C. Sleeman, Jr. inspecting a model of the paraglider in 300 mph 7 x 10 Foot Wind Tunnel. The paraglider, or "Rogallo Wing," was proposed for use in the Gemini Program. It would have allowed Gemini to make precision landings on land, rather than in the water. But the wing suffered a number of problems. The biggest problem was getting it to deploy properly and reliably. The plan was canceled.