I had a flight of two MiG-21s fly a mission that included a LandReFuAr waypoint, but things went awry. They takeoff, fly wherever, land back at their home base, park at two adjacent hangars, and power down their engines. So far, so good. After a few minutes, they start up again and begin taxiing towards the runway. This is where things go wrong: while taxiing, the two jets collided with each other, breaking the nose off one of the jets. They then sat there on the taxiway, immobile.
This link should show the incident
https://steamcommunity.com/profiles/76561198026935985/screenshot/2457349553668886100/