Why only 2 R27ETs? in Su-27 for DCS World Posted May 16 15 hours ago, UncleJunkie said: Being the first one able to fire a missile and force your opponent defensive seems probably the most important part of BVR combat. This. If you can get inside the OODA loop of your opponent and force them to react instead of act, you're probably going to win. At the very least the odds are stacked heavily in your favour at that point.