the authenticity is the obvious question. what can you tell us about authorship and whether they were under duress. >> there are two letter 'one from 2012 and one from 2013. i have to say the first time i saw them i thought, this is a joke. these can't really have been written by bowe bergdahl himself. then i showed them to u.s. officials, western i was officials who had been part of this whole process to try to get him back. they said, no, those are the real things that the red cross delivered to bergdahl's family. and that the family had examined the letters and saw things in both of them that only could have been written by bowe p. things like a little paw print on the first one which used to be one of his traditional ways of signing off on letters and references to things that the family would talk about. now, they do start logically talking about things like i'm being fed, i'm okay, but the first one in particular devolves