Interesting article by Scott Shane of the Baltimore Sun
with the title "Deadly craft of biowarfare nothing new to U.S. government" refers to an expose done by Freedom Magazine in 1980.
Here's a link to the Freedom page on this expose: http://www.freedommag.org/english/vol2704/unlock.htm

They designed deadly, silent biological dart guns and hid them in fountain pens and walking sticks. They crunched lethal bacteria into suit buttons that could be worn unnoticed across borders. They rigged light fixtures and car tailpipes to loose an invisible spray of anthrax.

They practiced germ attacks in airports and on the New York subway, tracking air currents and calculating the potential death toll.

But they weren't a band of al-Qaida fanatics -- or enemies of any kind. They were biowarriors in the U.S. Army's Special Operations Division at Fort Detrick.

From 1949 to 1969, at the jittery height of the Cold War, the division tested the nation's vulnerability to covert germ warfare and devised weapons for secret biological attacks if the United States chose to mount them.

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I have no reason to believe that they've suddenly changed their ways over the past 15 years.