Friendly Fire

"Tarnak Farm, near Kandahar, Afghanistan, pre-dawn, April 18, 2002. Two American F-16 pilots returning to their base after an uneventful support mission suddenly notice flashes from the ground, thousands of feet below. They have no idea that what they are seeing in the darkness is a company of Canadian paratroopers conducting a live-fire training exercise. Convinced that he and his flight lead are being ambushed, Major Harry Schmidt unleashes a 500-pound laser-guided bomb. Minutes later, he knows he might have made a terrible mistake. "I hope that was the right thing to do," he says over the…