i'm just wondering if you can kind of replay it in your head, the fractions of seconds where you went from what you were doing, you thought you were covering a marathon and wedding. you went from that to realizing, you are covering a major historic american disaster. >> caller: yeah, we knew it immediately. the kind of carnage we saw, this wasn't something small. some people said early on maybe a manhole blew up. i couldn't imagine a manhole blowing up would cause such a horrific situation. i knew something was bad. because there were two explosions. i didn't realize there was another one down on boylston street. i heard two other explosions. i thought they were in the same area considering the carnage that i saw. that's what i was thinking that moment. now processing this, going back, i wasn't on that side of the