The colonel was furious. “Can you believe it? They actually drew their weapons on U.S. soldiers.” He was describing a 2006 car accident, in which an SUV full of Blackwater operatives had crashed into a U.S. Army Humvee on a street in Baghdad’s Green Zone. The colonel, who was involved in a follow-up investigation and spoke on the condition he not be named, said the Blackwater guards disarmed the U.S. Army soldiers and made them lie on the ground at gunpoint until they could disentangle the SUV. His account was confirmed by the head of another private security company.