Colonel James S. Ketchum, was the U.S. military’s leading expert in a secret Cold War experiment: to fight enemies with clouds of psychochemicals that temporarily incapacitate the mind, reports Raffi Khatchadourian in a lengthy profile for the New Yorker:
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…The drugs under review ranged from tear gas and LSD to highly lethal nerve agents, like VX, a substance developed at Edgewood and, later, sought by Saddam Hussein. Ketchum’s specialty was a family of molecules that block a key neurotransmitter, causing delirium. The drugs were known mainly by Army codes, with their true formulas classified. The soldiers were never told what they were given, or what the specific effects might be, and the Army made no effort to track how they did afterward. Edgewood’s most extreme critics raise the spectre of mass injury—a hidden American tragedy.
Ketchum, an unreconstructed advocate of chemical warfare, believes that people who fear gaseous weapons more than guns and mortars are irrational.