Arnold Schwarzenegger went to the aid of an injured motorcycle patrolman who was struck by a car. The brawny actor was in Indianapolis to stress the importance of physical fitness in his role as chairman of the President's Council on Physical Fitness and Sports. Officer Ronald G. Knight, 36, was preparing to direct traffic for Schwarzenegger when his motorcycle collided Monday with a car driven by an elderly woman, police said. "He comforted the officer and ensured that the proper medical assistance reached him," said sheriff's Capt. Steven A. Davis. The officer suffered cuts and bruises, authorities said.