Originally Posted by
zandoval
Its an old acronym from US Army days. AO = Area of Operation
Thanks for the explanation!
Unexplained acronyms in forum posts remind me of a guy who posted one in a musician's forum a few years ago. Huge unbroken wall of text, with this one acronym buried in the middle. Several posters called him out on it.
Turned out that his two-letter acronym represented the first and second syllables of his misspelling of the name of some esoteric guitar effects pedal. Grrr.