I'm having a hard time looking at that box on the corner of a reasonably busy intersection, ostensibly there as some kind of early warning device, and that sign that says "Do not unplug"...and thinking "so all I have to do to defeat this is...unplug it?"
For a device meant to detect a something like a weaponized airborne agent over an area, I'm guessing Homeland Security would more likely detect all monitors being unplugged simultaneously than an actual airborne attack.
Seriously?