things yesterday, tamron, that they still have no evidence that this was foreign directed. they believe these people came up with this plot on their own, though they were inspired by terror groups. they say that they have found no indication that they had other attacks in mind, no evidence of that. why did they have all those pipe bombs and ammunition? still an open question. and they say despite some earlier reports and some earlier claims by witnesses, there's been no evidence of any kind of argument or disagreement or workplace problem that would have led to the attack at that time, at that place. they still don't know why the couple chose to attack farook's fellow employees that day. up next, new reaction, new questions on what can be done if north korea's claims are true that it debt fltonated a hydrog bomb.