BILL HEMMER, CNN ANCHOR: All right, back to AMERICAN MORNING now and back to Southern Florida. Just a quick update on what we're getting right now. Alligator Alley closed for about a 20 mile stretch. Two vehicles have been stopped by authorities. Bomb sniffing dogs have taken apparently positive hits on two of the vehicles and we are getting word now that some material taken from inside of at least one of the cars, possibly both, will be detonated shortly. What it is, we don't know. But authorities are taking no chances. Whether or not this is just strong suspicion or if it's paranoia, given the events of the world today, we do not know. But we'll sort it out for you as the morning progresses. Again, the latest from Florida as we get it.
'Alligator Alley' Closed for 20 Mile Stretch