Same assessment here as a former soldier. The first piece is debatable. I clearly saw an RPG and a personal weapon, and to be honest, unless the cameraman was ID'd, I would be 50/50 on that.

I don't know the tactical situation, but it looks like they were providing aerial cover for a convoy of some sort, since that's who they keep chatting with. This was quite possibly an ambush in it's very early stages. While disturbing (welcome to war) I don't think that the actions of the crew where unbecoming at that point.

I did however have an issue with the destruction of the van. There were no weapons visible, it was clear that they were collecting bodies for transport/medical attention. Any perceived or real threat to the convoy was at that time neutralized, and there was no need to fire.

Doing so clearly violated the Geneva conventions and the US Army's ROE. Both apache crews should be charged with murder, and the authorizing officer should be charged with some lesser charge for not confirming the intended target.