460th Chemical Brigade
Rio Bravo - the largest chemical exercise in the Army - is conducted at Dona Ana Range. This annual event, hosted by the 460th Chemical Brigade from North Little Rock, Ark., draws Reserve and active Army components from all over the United States. About 2,000 Army reservists from units in New York, Florida, Arkansas, Texas and Washington participated in Rio Bravo 2001 from Saturday through May 19 on about 720 square miles of McGregor Range.
There are three basic tasks performed by a chemical brigade. They are "recon, decon and smoke." A chemical reconnaissance unit identifies and marks a contaminated area. Decontamination teams remove harmful chemical remains from military equipment. Smoke is used for concealment missions, like bridge crossings, laying mine fields, troop movements, operation breaches and anything else that requires concealment
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