bomb on that russian jet that crashed in the sinai peninsula. there's speculation it could have been an inside. mary schiavo joins us, department of transportation. so much changes overnight in the past 24 hour, mary. this morning, we learned that the russian officials had essentially granted the entire fleet of a-321s, while they run some additional safety checks. they're looking at the plane. they're looking at technical, which is a far cry from what they were saying just days ago. while everyone else, based on uk and american intelligence is saying it's looking likely that this could have been a bomb. this is a major disconnect. >> well, it could be a major disconnect or could just be sensible. at this point, we don't have evidence of whether it's evidence of a bomb or mechanical failure or exactly what occurred here. i think that the fleet should be