reinforce the spots that don’t have bullet holes

Bruce Schneier on one aspect of security theatre:

Security Risks of TSA PreCheck 

PreCheck tells us that, basically, there are no terrorists. If 1) it’s an easier way through airport security that terrorists will invariably use, and 2) there have been no instances of terrorists using it in the 10+ years it and its predecessors have been in operation, then the inescapable conclusion is that the threat is minimal. Instead of screening PreCheck passengers more, we should screen everybody else less. 

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