I saw some of this tonight, so I am making this post in an effort to be proactive.
IMO, there are basically three different types of Friendly Fire (FF).
The Congo line: where 2 or more AC are chasing one or two Bandits that are trying to run. Plane two or three fires at a bandit has plane one pulls in front of them. in this case the #1 plane has the shot, if you are going to fire from behind him then it is your responsibility to make sure you are not going to hit the leading plane.
The furball: AC flying all over, cutting in front of each other, ect.A tricky situation at best, all I can say here is watch your lines of fire, don't "spray and pray", make your shots from close rang and keep the burst short, that will minimize the amount of FF.
IntentionalThis will get you removed from FSO.
FF is going to happen, it is a fact of life. If you are guilty, be apologetic, and try to understand how the other guy must feel. Expect to get yelled at, at the beginning, but if you respond correctly that should calm the situation quickly.
If you are the victim of FF, it is understandable to be upset, but try to remember it is only a matter of time before you do it to someone else. If the other guy apologizes, and feels bad, there is not much more that can be done. Remember, when you do it, you are going to want the other guy to cut you some slack.
A squad mate getting on range channel and cussing people out, is not going to help, and will most likely get that person ejected.