Brucella and all other remaining biological weapons in the U.S. arsenal were destroyed in 1971–72 when the American offensive biological warfare  program was discontinued by order of President Richard Nixon.The experimental American bacteriological warfare program focused on three agents of the Brucella group:
Porcine brucellosis (agent US)
Bovine brucellosis (agent AA)
Caprine brucellosis (agent AM)Agent US was in advanced development by the end of World War II. When the United States Air Force (USAF) wanted a biological warfare capability, the Chemical Corps offered Agent US in the M114 bomblet, based on the four-pound bursting bomblet developed for spreading anthrax during World War II. Though the capability was developed, operational testing indicated the weapon was less than desirable, and the USAF designed it as an interim capability until it could eventually be replaced by a more effective biological weapon.The main drawback of using the M114 with Agent US was that it acted mainly as an incapacitating agent, whereas the USAF administration wanted weapons that were deadly. The stability of M114 in storage was too low to allow for storing it at forward air bases, and the logistical requirements to neutralize a target were far higher than was originally planned. Ultimately, this would have required too much logistical support to be practical in the field.Agents US and AA had a median infective dose of 500 organisms/person, and for Agent AM it was 300 organisms/person. The incubation time was believed to be about 2 weeks, with a duration of infection of several months.
Classified may refer to:

General
Classified information, material that a government body deems to be sensitive
Classified advertising or "classifieds"

Music
Classified (rapper) (born 1977), Canadian rapper
The Classified, a 1980s American rock band featuring Steve Vai
Classified Records, an American record label

Albums
Classified (Bond album), 2004
Classified (Classified album), 2013
Classified (Sweetbox album), 2001
Classified, by James Booker, 1982

Songs
"Classified", by C. W. McCall from Wolf Creek Pass, 1975
"Classified", by the Orb from Metallic Spheres, 2010
"Classified", by Pete Townshend from the compilation Glastonbury Fayre, 1972
"Classifieds", by the Academy Is... from Almost Here, 2005

Other media
Classified (1925 film), an American silent film
Classified: The Edward Snowden Story, a 2014 Canadian film
Classified: The Sentinel Crisis, a 2005 video game for the Xbox

See also
Classification (disambiguation)
Classifier (disambiguation)