Yes, some cities are not only protecting themselves against terrorist attacks, but doing it cheaply!  I loved this article when I read it and could not beleive the simplicity!  What an idea!

It seems some cities are using Bluegill (crappies to us fishermen), to warn of poisoning a water supply! 

How many of us have gone fishing for bass or trout and hooked one of these?  They are ok eating, but lousy fighters and not what we are looking for!  Bluegill is kind of like the sad second prize when it comes to fishing.  They like to fin you when caught (even though they do not fight when being reeled in), and have enough meet for a snack!  4 or more make a dinner!

But!  The cities are using them as water canaries!  Oh how a fish can change its stripes overnight!  now they are heros!  And rightly so!

This is the kind of stuff that, unfortunately, we have to get use to (yes, you are drinking fish poop and pee!).  But they are cheap, damn hard to kill, and effective!  A perfect foil for the "Nice Muslims" that want to kill anything not muslim.  And I salute the cities doing this.  I suspect that a lot more are going to follow suit.

And it did not take a federal bureaucracy or grant to figure this one out.  Not by a long shot!

Way to go NY, SF and DC!  I guess budget crunches are good for one thing.  Figuring out cheap solutions to real problems!