Ignacio Montoya pauses, gathers strength, takes a step. With the assistance of a walker, an exoskeleton suit and robotic legs that are attached to his own and help propel him forward, Montoya is making his way up and down the promenade along the water's edge at the Marina del Rey boat basin, next to the Trader Joe's. "Christopher Reeve would be amazed," says UCLA scientist Reggie Edgerton, who worked with the late actor and is now watching Montoya's every move. But some improvements in function, thought impossible until recent years, are now being realized. Montoya was nearly killed in 2012 when a minivan crossed into his path while he was on his motorcycle.