A must read article:
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Suspicious activity in New York ignored by police
Hartford -- A man from Vernon was recently driving through New York when he saw something suspicious but when he called police to alert them he says no one seemed to care.
A few days ago, Mike Maney was on his weekly trip from Vernon to Northern New Jersey to pick up merchandise. He was waiting in traffic at the approach to the George Washington Bridge when he noticed three men in the car next to him with a camera.
"I came across a vehicle sitting across from us in traffic, with three middle eastern looking men in it, with a very small palm video camera,"said Maney,"... sat across from them for a minimum of 20 minutes and the entire time they were filming structures of the tunnels and the bridge." (snip)
http://www.wfsb.com/Global/story.asp?S=2122567
We also have to pay attention to cell phones -- phones that will activate explosives and phones that take pics. Technology helps us and it also helps the bad guys. E.g., Is that swarthy type innocently talking to a friend on his cell, is he about to explode a remote bomb or is he casing a building and taking pictures of the area? It only gets more complicated these days.