Not unless they've found something biological that will blow up a plane.
Remember the anthrax scare, that was all powders.
That's a possibility.
Urgent Information - Last Updated: 10 Aug 06 07:30
UK SECURITY CONTROL DELAYS AT UK AIRPORTS - 05:00 10th Aug 06
DUE TO HEIGHTENED SECURITY MEASSURES IMPOSED BY THE DEPARTMENT FOR TRANSPORT IN THE UK THERE WILL BE SIGNIFICANT DELAYS TO FLIGHTS DEPARTING UK AIRPORTS THIS MORNING
PASSENGERS ARE ADVISED THAT HAND LUGGAGE WILL NOT BE PERMITTED ON BOARD ANY AIRCRAFT AS ALL ITEMS MUST BE CHECKED IN
WE ARE COOPERATING FULLY WITH THE AIRPORT AND POLICE AUTHORITIES BUT SIGNIFICANT DELAYS WILL ARISE WHICH MAY CAUSE FLIGHT CANCELLATIONS LATER TODAY AND WE APOLOGISE SINCERELY FOR ANY INCONVENIENCE THESE ADDITIONAL SECURITY MEASURES MAY CAUSE TO PASSENGERS INTENDING TO FLY TO/FROM UK AIRPORTS TODAY
FURTHER UPDATES WILL BE POSTED ON OUR WEBSITE AS THEY BECOME AVAILABLE.