The Pentagon conducted a series of secret chemical and biological weapons tests on military personnel in the 1960s and 1970s. Veterans groups and members of Congress are demanding to know exactly what happened – and who has suffered. Jae C. Hong AP

Pentagon Allowed To Keep Chemical Weapons Tests On US Troops Secret

Veterans groups and members of Congress, including Rep. Mike Thompson (D-CA), are demanding to know exactly what happened during the Pentagon’s series of secret chemical and biological weapons tests involving military personnel in the 1960s and 1970s.