> The two F-15s now initiated a visual identification (VID) pass of the contact.
> Wickson's VID pass was conducted at a speed of about 450 knots (520 mph; 830 km/h), 500 feet (150 m) above and 1,000 feet (300 m) to the left of the helicopters.
Now I am not saying there is no room for BVR, ofcourse there is. The 2 tracks in formation coming from Russian airspace pinging you with their Russian military radars are definitely Russian fighters. But there are also a lot of times where there has to be a visual id.
A military jet with it's radars turned off is almost impossible to tell apart from a civilian jet based on radar data alone, and everyone errs on the side of caution, of course the side of caution occasionally is to fire first and id later[2][3].
[1] https://en.wikipedia.org/wiki/1994_Black_Hawk_shootdown_inci... [2] https://en.wikipedia.org/wiki/Iran_Air_Flight_655 [3] https://en.wikipedia.org/wiki/List_of_airliner_shootdown_inc...