Parabellum, first I want to say thanks for the constructive criticism and enlightening comments. I have (like most of the ARMA community) tried to figure out the 'mystery' of the sim's AI.
1. To begin, some of the comments I'm reading seem to be confusing AI with scripting; Ghost Recon's AI wasn't great, in fact, they were highly predictable, frustrating and in many ways, completely horrible. What Ghost Recon did well, however, was to simulate basic small-unit tactics by using scripted sequences to control the AI units in certain situations.
When Ghost Recon's AI had to actually