The convoy leader of a Rocky Mount-based National Guard unit rebuts an ABC News report that he and other members of the 1173rd Transportation Company abandoned a civilian convoy. By John Cramer Courtesy ABC News Civilian contractor Preston Wheeler claims a guardsman abandoned him during an ambush in Iraq. Related Video Watch the ABC News report A Virginia Army National Guard convoy leader and an American truck driver on Tuesday angrily denied an accusation that the guardsmen abandoned a civilian supply convoy that was ambushed in Iraq. U.S. Army and Guard officials also criticized ABC News for reporting the accusation...