Clouds of Secrecy - Operation Sea-Spray

Operation Sea-Spray was a 1950 U.S. Navy secret biological warfare experiment in which Serratia marcescens and Bacillus globigii bacteria were sprayed over the San Francisco Bay Area in California, in order to determine how vulnerable a city like San Francisco may be to a bioweapon attack.
Starting on September 20, 1950, and continuing until September 27, the U.S. Navy released the two types of bacteria from a ship off the shore of San Francisco, believing them to be harmless to humans. Based on results from monitoring equipment at 43 locations around the city, the Army determined that San Francisco had received enough of a dose for nearly all of the city's 800,000 residents to inhale at least 5,000 of the particles.

https://en.wikipedia.org/wiki/Operati...
https://priceonomics.com/how-the-us-g...
https://babel.hathitrust.org/cgi/pt?i...

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