Tucson Tests Biochemical Response on a Major Scale Health officials hold a three-day exercise in Tucson to test the Arizona city's ability to respond to a biochemical attack. The drill is thought to be the largest attempted in the United States. Mark Moran of member station KJZZ reports.

Tucson Tests Biochemical Response on a Major Scale

Tucson Tests Biochemical Response on a Major Scale

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Health officials hold a three-day exercise in Tucson to test the Arizona city's ability to respond to a biochemical attack. The drill is thought to be the largest attempted in the United States. Mark Moran of member station KJZZ reports.