What was that about biological weapons again?

An article published by SFGate today details how the US Army sprayed the San Francisco Bay Area with the bacterium serratia marcescens in 1950, and didn't tell anyone.  It is now believed that the experiment may have permanently altered the microbiological climate of the Bay Area.

Update:

atuttle provides the following additional or alternate links for folks who can't access the one above:

• http://www.mindfully.org/Reform/Military-Germs-US-Cities.htm
• http://free.freespeech.org/americanstateterrorism/weapons/US-Bioweapons.html
• http://www.abovetopsecret.com/forum/thread59987/pg1