Seriously, you cannot support that level of incompetency. How many people pass airport gates everyday? How many people are caught with explosives everyday? The

Seriously, you cannot support that level of incompetency. How many people pass airport gates everyday? How many people are caught with explosives everyday? The second pat-down should have been enough to decide that the machine was triggered by some chemical not directly related to explosives, as they were enable to find any bomb anywhere. Worse, it is very clear in the story that they know it can happen.