Originally Posted by kylemore

I'll just bring up one item that has been briefly touched upon in the thread. Every US airport I've been in has centralized security screening when going landside to airside. Many times this is for the entire terminal, although in some airports security will handle as few as a dozen gates or so. (PHX terminal 3 does this, 2 security checkpoints, one each for the 2 halves of the terminal). I have yet to see an airport in the US that uses "gate" security.