The person who gives to order to fire, doesn't he/she/they know where the bad and good guys are? Is this so difficult? Really that is a valid question. I have never been in the military so of course I don't know how things work.
I understand it would be more than a bit hectic, but really is it that easy to fire upon and kill the allies that are on your side? Again this too is a valid question. Can anyone out there explain to me how this happens?
Sadly we lost three troops to friendly fire, what I find even sadder this isn't the first time.
My heart felt sympathies to the families and friends of these brave people.