Actually, they are simply following orders.
From the Dept of Homeland Security -- given the current threat levels:
1. All Americans should continue to be vigilant, take notice of their surroundings, and report suspicious items or activities to local authorities immediately.
2. Everyone should establish an emergency preparedness kit and emergency plan for themselves and their family, and stay informed about what to do during an emergency.
Or, maybe these folks are part of the Citizen Corp:
About Citizen Corps
We all have a role in hometown security
Citizen Corps asks you to embrace the personal responsibility to be prepared; to get training in first aid and emergency skills; and to volunteer to support local emergency responders, disaster relief, and community safety.
Currently there are:
2,305 Councils which serve
218,927,842 people or
76% of the total U.S. population
Even I have a local council watching out for me ... I'll sleep well tonight. I assume the all of the brownshirts have been requisitioned by these folks.
Just wait until the Ready Kids grow up. http://www.ready.gov/kids/home.html