In less than 20 hours, Adam Golitsky became the first paralyzed man in the United States to finish a half-marathon using an exo-skeleton as he participated in the Portlandathon Sunday. "The half-marathon was an incredible experience," Golitsky told InsideEdition.com. "Definitely the hardest thing I've ever done physically. Definitely became a much better walker because of it too." InsideEdition.com's Keleigh Nealon (http://twitter.com/KeleighNealon) has more.