In 2024, the Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA) is overseeing the safe and environmentally compliant closure of the two remaining U.S. chemical demilitarization facilities: the Pueblo Chemical Agent-Destruction Pilot Plant in Colorado and the Blue Grass Chemical Agent-Destruction Pilot Plant in Kentucky.

On July 7, 2023, the last declared munition in the U.S. chemical weapons stockpile was destroyed in Kentucky, honoring a commitment to the Chemical Weapons Convention, an international arms control treaty.

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