Detailed text transcripts for TV channel - MSNBC - 20130917:17:12:00
Scene here. we have air units in the air. we have seen some medevacs flying around, so we're not quite sure if they are going to be medevacking some of the injured out. i've got to tell you just from the looks on the faces of federal law enforcement folks responding here, this is a very serious situation. >> wrc tony tull joins me in the studio. i know you've been working long hours. the station did extraordinary work and continues to. you were in boston for the marathon coverage. what you saw yesterday when you were in, quote, the hot zone before they put the perimeters out and they still tho...