Its good to see we understand that war is what it is. Friendly fire incidents happen all the time. That is why you mark your lines, pop smoke, get your radio man out of harms way and take cover.

Imagine: You are in a room in a combat zone, with thick concrete walls and all hell has broken loose. You have been charged to keep a doorway secure so that your sarge can get a Air Strike. Multiple tangos inbound on your position and they parent gonna stop until every thing is dead. You are shaking so hard that you feel as if your heart is going to explode. You hear boots running towards that door, you clear the chamber of your SAW and prepare to let it loose. The "enemy" materializes in the door way, and let it go full auto praying that you don't get wasted by any ricochet, or the enemy. Because the air strike is just a second away. You wipe out all the guys at the door way and they are piled up almost to the top of the door frame, then you notice something about the moaning wounded, they have US flags on their shoulders.

These things happen, if some one runs up on your 6 with out yelling FRIENDLY and you turn round snap shoot them, there is nothing that can be done. We see it all the time in first person video games, and we will see it large scale and im die Fleisch in videos like these. Lucky for those guys in the video that they didn't wipe out the whole column.

It could have been worse.