Firing into close combat: what if they're not your guys?
Just what I said. I was playing a four way game yesterday: grey knights (me) vs. blood angels, eldar and nids. I found my self in a position where I could fire five psycannons into a cc between the eldar and BA, and my opponent says I can't do it. However, the rationale given in the book is that you don't want to hit your own troops, and neither of them were my troops, making it just like firing at a compacted group of soldiers.
A: Have any of you guys come across something like this?
B: What can be done about it?