Well, here's what I think about current security around the airports.
Right now, the threat of a terrorist attack is still high and will be even after we topple Al Queda, which we will, eventually.
I think gradually you'll see a relaxation of security at airports. IT'll be maybe two years before security around airports loosens up .Security in airports is antoher sotry, that might take a decade to loosen, and it will never be as convenient and easy as it used to be, it will be tight inside forever, my firend. Forever. you can thank Osama Bin Laden himself for that. I'd like to kill the guy with a crowbar, and I sympathize HEAVILY for the New Yorkers who gave up their lives to save others. They are all heroes.
Unfortunately for spotters, added security equals less opportunity.
As was said earlier it is a sign of the times. Scurity is at a level that, prior to the attack, would have been considered insane by you and me alike. But attitudes have changed, at least for the time beaing. People are more willing to sacrifice convience in the interest of safety, and yes, a man loafing around the airport perimeter does look suspicious, and should and will be dealt with, for the time being.
Keep in mind though that they won't keep it up forever, they will inside the airports but not outside, and when I move to Maui here in a couple years I look forward to sitting beyond the fence on the approach path like I used to enjoy. Until then, you just have to put up with security till the US deals with the threat and makes the world safer, at which time less security will be needed.
For now, the last thing we need are more dead people, more felled buildings, more dead rescue workers, more dead pilots, more dead passengers..etc, etc...