i'm definitely feeling guilty. >> i can understand. there's no reason to feel guilty at all. you have no reason to know this. >> -- save another life. >> i can understand why you feel that way. i do appreciate you joining me. thank you very much. steve, you played soccer with dzhokhar tsarnaev for a couple of years, i think. i would you describe him? >> very kind. pretty much similar to every college friend i have. like no different than any other kid. >> this is what all his friends are saying. particularly the students alongside him in the last couple of years and yet clearly there was another side to this boy which turned him into an alleged mass killer. anything in his behavior pattern in the last few months say to