Thanks Jara! Does it mean that if I set the odds to 1% I'll most likely get bounced once in a 100 missions, or is there some other factor that comes into play?
You can set the odds in increments of 10 only, i.e. 10, 20, 30,... %. For example, when set to 10 (default value), the probability of ambush is once per ten missions, when set to 20%, the probabililty increases to twice per ten missions, etc.