The armed and dangerous is, as Seagull said, just referring to the suspect. He shot and killed the victim in this document, a Cab Driver for Yellow Cab Company. All the document is saying is that, based on that, the suspect is considered armed and dangerous.
It's not the 'Armed & Dangerous' at the document end that still slightly confuses me, but what the crimes of Zodiac are categorised as at the top of every file pertaining to him.....
'Extortion.' Who the hell is Zodiac trying to extort? No ransom demand as far as I know.
Zodiac extortion.png
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