the intelligence community has to approve it, it is often times approved because that official wants to provide more information as they are reading intelligence report they want to know more about the significance, that is shared between the briefer. it's possible that official could do that him or herself but by nature of it it is only exchanged one to one. there are open questions how extensive was the unmasking, what was the source, but this practice is not unusual, it happens, and two, it certainly is not illegal. there are protocols for the unmasking under certain rules. >> thanks to jim sciutto. >> we have to apologize we used