witnesses start filing in and take their seats. nbc s hans nichols is outside of the hearing now. hans, what should we expect in the next couple of minutes? there s an important dynamic to watch here. that is at the witness table. at the center, you see james clapper, the head of the dni. to his left is an admiral, admiral michael rogers. clapper wanted to fire rogers about a month and a half ago. at the same time, michael rogers has met with donald trump, potentially to be the head of the dni, the director of national intelligence, the very job that james clapper has. to the extent that there s tension on the witness table, look for the interplay between those two. now, at nbc news, we are reporting that the leading candidate for that dni job, to replace clapper, is senator dan coats, outgoing senator from indiana. but look for that dynamic and look to see if you think michael rogers, the admiral, he s got four stars, whether or not he s saying anything in a public audition, potenti