Nightly News | August 04, 2013
let's bring in our chief foreign affairs correspondent andrea mitchell . andrea, we know from previous experience the u.s. can't maintain this red alert posture indefinitely so what's the plan going forward here?
>> it really is day by day . the intelligence of an impending attack as you're reporting is serious but they still don't know the specific target. there are several other threats, possibility for the retaliation for the drone strike richard just mentioned and a threatening speech last week by ayman al zawahiri . the upcoming anniversary this week of bombings of tanzania and elsewhere and of course ramadan. after wrestling with whether to closing the additional posts they decided to err on the side of caution.