This gets a bit confusing, and I'm not a Table Guy

A lot of the original AI information was, if memory serves me correctly, hard-coded into the game. AI.tbl and ai_profiles.tbl are files that you can create which will over-ride the inbuilt settings, thanks to the SCP guys.
For references on the tables themselves, the Wiki is your best bet....
http://www.hard-light.net/wiki/index.php/Category:TablesThis is the link for the entire list of tbl files.
Look also at AI.tbl, as you can control general AI habits from there if I remember correctly.
If I got any/all of this wrong, please feel free to point out
