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They saw in sharm el sheikh. what can we do screeningwise to prevent this from happening again? is it possible, can you have enough security in place that you catch every potential threat? >> i think we need to understand in the world of global travel, globalization of commercial aviation, to ever suggest you can create a fail safe system would be an illusion. but i do think that if the rest of the world adopted the fairly stringent approach that the united states takes, often subject to critici...