PROWLER
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PROWLER was a mid-1980s experimental robot mobile Sentry gun device.
The name was an acronym standing for "Programable Robot Observer With Logical Enemy Response" ;
The Logical Enemy Response being twin M60 machine guns.
It was a wheeled device with a gun turret and sensor array, resembling a minature tank.
[edit] References
http://cse.stanford.edu/classes/cs201/Projects/autonomous-weapons/articles/killer-robots.txt