There is a command system. As I just described, under the current command system you have the American corps, the division, and down into Brigadier General Fraser's brigade--and there are five other brigades.
They have a coordination system. They have a coordination system for air operations, for artillery--these sorts of things. They also have coordination of where their various forces are.
The challenge you have in friendly fire, so-called friendly fire.... By the way, historically there have always been unfortunate deaths in war caused by allies or your own forces. In many of these cases, the friendly-fire incidents occur at night, in the black, with forces coming together.
For instance, our investigation into one of our casualties to know whether it was friendly fire is still going on, but in that case an American outpost was under attack and in danger of being overrun. Our forces were sent in as part of the reserve ready to go in and protect them. I guess they were arriving in the middle of the night, at the same time that a firefight was going on; sometimes people fire when they're not sure what they're firing at, so this happens--but there is a coordination.