The filmmakers behind Fast Furious 7 are turning to the brothers of the late Paul Walker to help complete the action sequel. In a Facebook post today, the production revealed that Cody and Caleb Walker have joined the film to help fill in some remaining action and small gaps that were left in the wake of the actors death. Paul had already shot his dramatic scenes and most of his action for Fast Furious 7, and its among the strongest work of his career.