kissinger claims he only learned that in 1992 or something and that was stuart herrington story for the first time. he never knew that. he thought this is what he claims. when they sent the last helicopter that they were getting the last people out of the embassy. so my point is that there was so much misunderstanding on the ground and miscommunications that it took a lot of double sourcing things, getting multiple perspectives on the same event, trying to get really to the truth of it. but i'm happy to say that we have screened at in multiple cities now and is on the brink of its reactor cloverleaf. it just came out of new york and so for -- so far they have not been any major claims of misinformation. there was one little thing that i think we got wrong but i think most of white christmas we have it as being crosby's version and it wasn't. other than that there has been no significant factual corrections. c-span: what version was a? >> guest: there was -- c-span: the ink spots had a version. >> guest: i wasn't incorporated spots but it was supposed to be bing crosby's version but thin