i still think that's the million dollar question, why his colleagues. that you don't see much. you don't see terrorists picking on the people they know personally. it's usually the symbol, the symbol of the american dream. why not go to a big box store or the statue of liberty? >> they knew this was a soft target, only building of the three that didn't have a key pad to get in. >> i actually think they had a different target in mind, others have said this. got the rental car and had the bombs, but the bombs were at home, unsophisticated. i actually think that some altercation, i've heard somebody insulted his beard at the party and that's when he went home, got his wife, dropped the baby off, came back, left the bombs there. the bottom line is, he got offended and decided it happens here, now, today, and happening against my colleagues because somebody deeply offended him. >> casey jordan, thank you very much, taking us into the mind, some how, some way of these killers. coming up, a closer look at the victims, the victims of this