You're watching too many movies. As long as we are imagining, why not imagine a team of terrorists paratrooping on to the tarmac armed with nuclear bombs, and a

You're watching too many movies. As long as we are imagining, why not imagine a team of terrorists paratrooping on to the tarmac armed with nuclear bombs, and a vial of smallpox virus genetically modified to be exceptionally virulent? Or that the president is secretly controlled by aliens and has introduced an agent into the water supply that will sterilize all humans, allowing a non-violent takeover of the planet by 'them'.