This is getting ridiculous. Read the article linked below. Follow the links in the article to see the documentation. What type of civil unrest are the feds expecting? More importantly, what are the feds planning that would result in large scale unrest?
It becomes even more important that the recent congressional action to curb DHS ammunition purchases be passed. See my post below, 4/27/13 Ammunition Management for More Obtainability (AMMO) Act of 2013
Here is the story about the DHS latest ammo purchase plans: http://www.infowars.com/dhs-seeks-millions-more-rounds-of-ammunition/