The Boston Marathon bombing killed a grand total of 3 people. The theory might be that even if a terrorist blew up an airliner's worth of passengers on the ground, many would survive, while the same bomb on the airliner itself is more likely to cause a crash that kills everyone on board.
The Boston Marathon bombing killed a grand total of 3 people. The theory might be that even if a terrorist blew up an airliner's worth of passengers on the ground, many would survive, while the same bomb on the airliner itself is more likely to cause a crash that kills everyone on board.
You could build a bomb out of things you can buy in the shops past the gate at any big airport.
But you won't have to, because it's easy enough to get anything past security anyway if you know what you're doing. Even during tests they miss the vast majority of the "smuggled" weapons.