you're about to do a relay as well in philadelphia and will be racing with sarah reinerson and scottand both of them are athletes, both of them like you are missing a leg. first of all, how did this all come about? how did this relay come about? >> we're all part of the challenge athletes foundation, a nonprofit that works with people with disabilities. >> is it nerve-racking for you? obviously they've done this, i've met scout before and talked to her. how are you feeling about it? >> you know, i met them probably three months after my amputation at a challenge athletes foundation run clinic and, you know, they're just incredible women and i really looked up to them so now to have the chance to be racing right alongside them at the philly triathlon is very ebs sighting. >> tell me briefly the challenge athletes foundation, what is that? >> it's a nonprofit and basically they help people get back on their feet after they have lost a limb or they've been in an accident or are now wheelchair bound and they use that. they use athletics as a tool to help them get back on their feet. >> y