Marines from the 15th Marine Expeditionary Unit (Special Operations Capable), carrying out Operation Swift Freedom, were involved in combat while blocking the roads leading away from the Taliban-controlled city of Kandahar. A firefight erupted when the first vehicle of a seven-vehicle convoy attempted to run the roadblock, was restrained by concertina wire, and the passengers fired upon the Marines who approached the vehicle. The rest of the convoy headed in another direction and air support was called in to destroy the targets. The Marines suffered no casualties, while enemy casualty estimates varied between fifty and 150.