Also known as BZ. Deemed a 'super-hallucinogen'... the effects could last for six weeks (!). Developed by the Army Chemical Corps, the head doctor tested it on himself, and went into giddy hallucinations for a week. He got the Decoration for Exceptional Civilian Service for that... The drug was later (voluntarily) tested on 2800 Army recruits... a few seemed to go mad permanently. Supposedly hard to come by; I've never looked (I haven't!).