Easy to do ILLEGALLY in some places. Hilo Airport, for example, offers breathtaking eye-candy shots of the flora outside for paxs in the sterile area. Wander too far, through a no-door/no signs posted spot and you done been OUTED. No recourse but to have an armed marine escort you back into the sterile (and UNposted-as-such!) area. My first hint that TSA might not be the brightest bulb in the marquee. Unbelievable THEN. SOP now, as I'm understanding...