>> Why is airplane security different than other contexts? Presumably because the margin of safety for optimal aircraft operation is a lot thinner, and there's

>> Why is airplane security different than other contexts? Presumably because the margin of safety for optimal aircraft operation is a lot thinner, and there's a high likelihood that a catastrophic failure results in everyone on board (usually several hundred people) dying. In comparison, a regular train derailing (e.g. via a bomb, or whatever) isn't going to be as disastrous. Edit: why the downvotes?