PROWLER
Encyclopedia
PROWLER was a mid-1980s experimental robot mobile sentry gun
Sentry gun
The sentry gun is a gun that is automatically aimed and fired at targets that are detected by sensors. The earliest functioning military sentry gun was the Phalanx CIWS, a radar-guided gatling gun platform that defended ships from missiles....

 device.

The name was an acronym standing for "Programmable Robot Observer With Logical Enemy Response" ;

The Logical Enemy Response being twin M60 machine gun
M60 machine gun
The M60 is a family of American general-purpose machine guns firing 7.62×51mm NATO cartridges from a disintegrating belt of M13 links...

s.

It was a six-wheeled vehicle with a gun turret and sensor array, resembling a miniature tank.
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