this issue before senate committee. i think the fact there senator is that the fbi text alert on him at that point was more than a year old and had expired. not only have we learned that tamerlan tsarnaev himself was listed on this tide list, so was his mother. joining us from memphis is fill mudd from the new american foundation. he used to be counterterrorism official for the fbi and cia. and, mr. mudd, welcome. now that we know that this elder slain brother and his mother were both on this tide list, let me back up and ask you, how should lists like this work in the first place? you re talking about two different things here. one is an identity list that is if you re an analyst and want to understand everything that the u.s. government might know about someone that is vaguely suspected of being involved in