crash but hasn't yet produced any evidence to prove they did it. we have the story covered from all angles. let's start in london with nbc's keir simmons who's at number 10 downing street where hours ago british prime minister david cameron met with prime minister cici. >> reporter: what i've been hearing is that the british holiday vacationers were coming back from sharm el sheikh will not be allowed to bring their hold luggage with them. they will only be allowed to bring hand luggage on those flights back. thousands of those vacationers returning back to the u.k. now the obvious next question to that official was, well, does that point to where you think there was a weakness on the flight? the official would not answer that question, but you have to ask the question, if the british think that even now it is not sensible for passengers to fly back with their hold luggage, then that raises the alert about how worried they are about