worked out as law enforcement executes search warrants throughout the day, interview family members, and try and pinpoint who exactly the shooter was, if he was, in fact, carrying somebody else's identification. >> nbc's michelle franzen in newtown, connecticut. thank you so much, michelle. let's go back to the white house and nbc's kristin welker. we want to play some sound from the president today who spoke just over an hour ago. take a listen. >> our hearts are broken for the parents of the survivors as well. for as blessed as they are to have their children home tonight, they know that their children's innocence has been torn away from them truly, and there are no words that will ease their pain. >> kristin, you were present as a very emotional president talked about what happened. what more can you tell us about his reaction to this devastating tragedy today? >> reporter: well, martin, this is really the most emotional that i have seen president obama in the wake of one of these