Originally Posted by
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The TSA is the first line to preventing airplanes from being hijacked.
Think of it this way. We give those in the military airplanes w/bombs, ships w/missiles, tanks and guns w/ammo and we completely trust them not to turn on us and forcefully take over the country. But we have issues trusting that they won't hijack an airplane. What sense that make?!?!
It makes a lot of sense.
To "forcefully take over the country" takes a lot of people. To forcefully take over a plane possibly only requires only one person.
This issue here is about allowing an entire class of persons to bypass a security where they would subsequently be given an opportunity to do a huge amount of damage, or introduce bad objects, say, a cache of weapons, that could be used by other persons to do something bad.
The situation to what you compare above is not remotely equivalent. We always limit risk. We don't give every soldier the codes to nuclear weapons; doesn't mean we don't "trust" them. If a single army soldier went crazy he would be stopped in a short amount of time (e.g. Fort Hood incident.)