(California Court of Appeal) - Held that the organizer of a half-marathon race potentially could be liable for the cardiac-arrest death of one of the runners. Surviving family members of the runner alleged that the race organizer was negligent or grossly negligent with respect to the provision of emergency medical services. Affirming in part and reversing in part, the First Appellate District held that summary judgment was not warranted based on primary assumption of the risk and that a triable issue of material fact existed regarding gross negligence.