no one has really put this into the big picture.
These guys fight and fly every week, every week they risk their lives to fight. When they fly around in engagement zones, they do not wait for a RPG to come at them before they decide "Hey this guy is a bad guy" and shoot back...that is just not smart warfare. You try to identify possible enemy targets and weapons and take them out before they become the nail on your coffin.
We can rewatch this video over and over and we can see where mistakes were made by these service men. Unfortunantly the service men in the video do not have this luxury, they have seconds to identify enemy weapons on a little tv screen inside the cockpit of an apache helicopter probably half a mile to a mile away and act. (Use judgment on when you hear the guns firing and when the bullets actually hit). In normal everyday operations probably no shooting would have happened, but however known insurgents were in the area fighting...so you tell me:
You are in the helicopter, a single RPG or spray of gunfire WILL end your life, you are in a battle zone and you see a group of unknowns. A couple of people ARE carrying weapons and one "might be" carrying a RPG. As you fly around a guy is crouched behind a corner looking up at you with something in his hand, it might be an RPG or nothing. But he is behind a corner looking up at your helicopter with something in his hand, known insurgents are in the area, and a battle has been taking place. What is the logical conclusion you can draw up with those facts behind your mind? If you do not take him out and he has a RPG, sucks to be you. There is only one way ensure that the ground forces are safe and that you go back home that day to eat another meal and call your wife and kids, take out all possible threats.
Like i stated these guys only have one shot, they can not take a picture and study it to make sure they are right, no they have to act by what they see on a small TV screen in a moving helicopter up to a mile away. Cause if they don't, that could be their last mistake.