If your numbers stated from the USMC Sgt are true (and I'm not questioning your memory), then that's sad and scary.
However, nowhere have I defended fratricide. Sucks and I think most trigger pullers (and I am not one, combat support, thank you!) really do try their utmost to not frag a friendly.
My point, which I think is the one to cause you to call "fight's on," had to do with naming names. It doesn't seem to occur when it's a Brit, so why is it kosher (wait for it...................................................get it?!) to name an American on pprune when there's a screw up?
And for the A-10 doing the wrong target, I'd have laughed too. Now, did they learn from that episode? I hope so.