Paraplegics take first steps with robotic legs

Paralyzed for the past 20 years, former Israeli paratrooper Radi Kaiof now walks down the street issuing a faint mechanical hum. That is the sound of an electronic exoskeleton that moves the 41-year-old's legs and propels him forward. "I never dreamed I would walk again. After I was wounded, I forgot what it's like," said Kaiof, who was injured while serving in the Israeli military in 1988. "Only when standing up can I feel how tall I really am and speak to people eye to eye, not from below."