Just an added note. Some of the families of the 4 Canadian men whom were accidentally killed, did not seek revenge.
An invesitgation? Yes, absolutely, so that no one, no matter where they are from: allied forces or their own, would face 'friendly fire' issues (oxymoron).
I cannot speak on behalf of all those families, but I do recall family members on television being interviewed, and a couple of them did not speak in such a manner as to rake the American pilots over the coals. They figured, having done such an error and living with that, was punishment enough.
I wish I had the links, but I believe CBC footage of March/April 2002 would have some of it. Speeches from family, friends, and in-laws.
Think of what happened during World War 2 with the Canadian warship: Haida. It was concluded, that it had been sunk, by 'friendly fire' and many men were lost off of the coast of France that day. I believe it was in the 100s.
Tragic. The American soldiers have to live with this. That would be punishment more than I could possibly bear. Let's hope these misfortunes, never happen again.
Friendly fire, even by ones own country, is unfortunately, nothing new.