Two defense contractors, working for a subsidiary of Blackwater Worldwide, have been charged with shooting and killing two Afghan citizens in Kabul and wounding a third, prosecutors said on Thursday. “Justin Cannon, 27, and Christopher Drotleff, 29, were indicted by a federal grand jury in Norfolk on murder and other charges in the May 5 shootings, in which the men opened fire with AK-47 assault rifles on a car that they said they thought was trying to run them down. The indictment was unsealed Thursday. At the time of the shootings, the men were Pentagon contractors employed by Paravant LLC, a Blackwater subsidiary that specializes in firearms training. They were in Afghanistan to train that country's army in using and maintaining weapons systems and were transporting two Afghan translators at the time of the incident, their attorney said.”