Zero

Zero hands CJ an RC Baron with a fuel limit and a list of three Berkley couriers. CJ flies the RC plane around San Fierro and shoots each one down before fuel runs out.
Supply Lines... is a mission in given to protagonist Carl Johnson by electronics expert Zero from his store in Garcia, San Fierro, San Andreas.
CJ enters the shop, looking for Zero and ignoring his plea to leave him alone. CJ enters the back room of the shop, still looking for Zero, and finds him hanging by his underwear in a closet. Zero explains that Berkley humiliated him and that he is in a lot of pain. CJ suggests that he take revenge, so he asks what kind of weapons Zero has. Zero says that he has a miniature plane, and CJ suggests using the plane to humiliate Berkley.
Zero suggests that the two destroy Berkley's delivery service fleet. CJ then takes control of the plane, maneuvering it to different parts of San Fierro in order to kill the couriers before they make their deliveries. He kills five sets of Berkley's delivery personnel, all while watching the fuel of the plane, and flies the plane back to the roof of Zero's shop.