Combined with massive purchases of ammunition by various U.S. agencies, this bodes ill for the weeks between now and the November elections.
A Washington Times article is a possible early indication of this. You can read it at http://www.washingtontimes.com/news/2012/sep/19/officials-iranian-quds-force-threat-us-homeland/
Considering that the U.S. and allied nations have a huge armada of ships in the Persian Gulf and that Israel will likely attack Iran soon, the notion that Iran would attack the U.S. homeland is small, if not suicidal.
(c) Alan Caruba, 2012