There is a quote from U.S. Air Force Verdict (given to pilot), by Lt. Gen. Bruce Carlson, 8th Air Force Commander:
You acted shamefully on 17 April 2002 over Tarnak Farms, Afghanistan, exhibiting arrogance and a lack of flight discipline. When your flight lead warned you to "make sure it's not friendlies" and the Airborne Warning and Control System aircraft controller directed you to "stand by" and later to "hold fire," you should have marked the location with your targeting pod. Thereafter, if you believed, as you stated, you and your leader were threatened, you should have taken a series of evasive actions and remained at a safe distance to await further instructions from AWACS. Instead, you closed on the target and blatantly disobeyed the direction to "hold fire." Your failure to follow that order is inexcusable. I do not believe you acted in defense of Major Umbach or yourself. Your actions indicate that you used your self-defense declaration as a pretext to strike a target, which you rashly decided was an enemy firing position, and about which you had exhausted your patience in waiting for clearance from the Combined Air Operations Center to engage. You used the inherent right of self-defense as an excuse to wage your own war.
https://web.archive.org/web/2004080....ca/news/background/friendlyfire/verdict.html