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When the movie Jacob’s Ladder came out in 1990, many people were probably not aware that it was loosely based on 1968 military experiments conducted in lab and field exercises at the Edgewood Arsenal proving ground in Maryland.  Even though Jacob’s Ladder ends with a brief description of 3-quinuclidinyl benzilate (BZ) and its effects, Adrian Lyne, the film’s director, has denied the powerful and dangerous hallucinogenic compound was ever used on human test subjects.  However, there is evidence to suggest otherwise.  
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On Erowid.org’s Datura ‘effects’ section, they list delirium capable of bringing about auditory, visual, and tactile hallucinations indistinguishable from reality.  This waking dream-like state can lead to unconscious violent behavior much like a drunken ‘black-out.’  It’s also reported uncommonly large doses can cause hallucinations lasting for two to three days.  This mirrors available data regarding the duration of BZ’s effects.