The drones are coming. Starting in September, if someone in Clemmons, North Carolina, calls 911 to report a cardiac arrest, the first responder on the scene may be a drone carrying an automated external defibrillator, or AED. “The idea is for the drone to get there several minutes before first responders,” such as an emergency medical technician or an ambulance, said Daniel Crews, a spokesperson for the sheriff’s office in Forsyth County, where Clemmons is located. The sheriff’s office is partnering on the project with local emergency services, the Clinical Research Institute at Duke Universit…