Current plans cover a ten mile area.
They're sounding the alarm figuratively in the event these sirens literally go off during an emergency.
Current federal guidelines require evacuation plans for a 10-mile radius around nuclear reactors. At Indian Point that area includes four counties in New York and a population of 480,000.
Expanding the zone to 50-miles would encompass parts of four states and 20 million people.
In a statement the NRC claims a federal task force concluded a 10-mile-radius emergency planning zone would assure that "prompt and effective actions can be taken to protect the public in the event of an accident" at a plant.
The NRC says the area could always be expanded if warranted. An Indian Point spokesman says the proposed legislation is politically motivated.