There have been dozens of cases of "middle eastern looking men" trespassing at reservoirs, taking pictures of infrastructure locations, attempting to enter power plants, etc..
Nearly every case where the perps have been caught, the turn out to be here legally, with full identification, and carrying nothing more dangerous than a camera.
It sure feels like our security and our resources are being tested, and on a massive scale.
It would seem to me that trying to gain entry to a power plant under false pretenses should be some sort a crime - for God's sake, everything else is a crime nowadays.
They should have been frisked, allowed to enter, and then held in a secure area until they can be dealt with by the proper people - like the familes of those killed on 9/11.