They had plenty of time to determine the threat.
As far as I know these videos we see are from hidden heli-copters. It's pretty obvious the people in this video didn't realize a gunboat was hovering over-head.
Also, it took the nearest ground troops like 10 minutes to arrive on the murder position.
So... who WERE they "shooting at?"
-John
The troops down the street.
Here is a first hand account from a reporter who was there (starts around 1:30)
http://www.npr.org/templates/player...n=1&t=1&islist=false&id=125630795&m=125630787
David Finkel: "Hi everyone. Thanks for joining this chat. We got to see an edited version yesterday of a disturbing video showing what one day in the surge was like. Since I happened to be there that day, I thought I'd try to put the video in fuller context. I'm looking forward to your questions...
What's helpful to understand is that, contrary to some interpretations that this was an attack on some people walking down the street on a nice day, the day was anyting but that. It happened in the midst of a large operation to clear an area where US soldiers had been getting shot at, injured, and killed with increasing frequency. What the Reuters guys walked into was the very worst part, where the morning had been a series of RPG attacks and running gun battles...
If you were to see the full video, you would see a person carrying an RPG launcher as he walkeddown the street as part of the group. Another was armed as well, as I recall. Also, if you had the unfortunate luck to be on site afterwards, you would have seen that one of the dead in the group was lying on top of a launcher. Because of that and some other things, EOD -- the Hurt Locker guys, I guess -- had to come in and secure the site. And again, I'm not trying to excuse what happened. But there was more to it for you to consider than what was in the released video."