Well, I just heard about this, but in this vidio, after the crash, there is some info at around 2:00 min and around 4:50 min
1- The rcpilot says he didn't hear anything (I belive him, he was hovering maybe 6-9 feet away from him. the camera was 3 feet away from the pilot, you only hear the RC)
2- The airboss sais to the rc pilot he did WHAT HE(THE AIRBOSS) told him to do: fly away. And that he told the FS pilot to go left, and he did not: he buses the field.

Now, there are rules and people that will decide this, but to me, it was the FS pilot fault for not going let WHEN TOLD TO, and the airboss' fault for letting this situation happen on the first place.

This is of course a simplifed vision: the 500feet rule, that being the FS pilots home, etc... stuff like this is nerver black and white, it's all diferent shades of grey. Done for me, and whatever happens, I doubt it's going to be fair.

Edit to video: http://www.youtube.com/watch?v=lOEnn...eature=related