I managed to find a group of tanks that way... I lost track of them, and then I saw laser warning on RWR. I started looking at the direction and finally found them..
In the case when I was on final, the tanks fired, I got MSL warnings, but I looked at the direction and saw no projectiles coming my way...so I continued landing. Itt was a bit nervous landing, because the tank(s) was firing missiles quite often. Probably it managed to fire around 8 times before I landed and stopped on the airstrip.
It was too far away I guess, because even after stop I was save.