call box. who was that? did that person have any inkling of what was going to happen in dallas? was it a coincidence? was it about some other event? was it simply a crank call? we don't know. boy, that was some kind of coincidence. and that's cambridge, where there were such a concentration of communist spies through the '30s and '40s. >> craig, if i could just step in here. i think that's a great example of what's new today as opposed to before, because that document had been released in part in the past but the fact that it was passed along from the british intelligence service, mi-5, had been blocked out. now we get to see the whole document whereas a couple years ago we only saw part of it. >> this unspecified number of documents that are being placed under the six-month review, president trump bowing to pressure from the fbi, the cia. he wrote, i have no choice today but to accept those redactions than allow potentially