"The Tarnak Farm incident refers to the accidental killing of four Canadian soldiers and the injury of eight others from the Third Battalion of Princess Patricia's Canadian Light Infantry (3PPCLI) on the night of April 18, 2002 by an American F-16 fighter jet. The aircraft, piloted by U.S. Air National Guard Major Harry Schmidt, dropped a laser-guided 227-kilogram (500 lb) bomb on the Canadians who were conducting a night firing exercise at Tarnak Farms, near Kandahar, Afghanistan"
The pilot was stoned:
"One of the issues highlighted by the Inquiry related to the use of "go pills" (amphetamines) in combat. In testimony it was revealed that Schmidt and Umbach were told by their superiors to use "go pills" on their missions, and blamed the incident on the drugs."
And finally:
"On September 11, 2002, the U.S. pilots, Majors Harry Schmidt and William Umbach were officially charged with 4 counts of negligent manslaughter, 8 counts of aggravated assault, and 1 count of dereliction of duty. Umbach's charges were later dismissed. Schmidt's charges were reduced (on June 30, 2003) to just the dereliction of duty charge. On July 6, 2004 U.S. Lt.-Gen. Bruce Carlson found Schmidt guilty of dereliction of duty in what the U.S. military calls a "non-judicial hearing" before a senior officer. Schmidt was fined nearly $5,700 in pay and reprimanded."
http://en.wikipedia.org/wiki/Tarnak_Farm_incident