Don't be alarmed, but a reactor at that nuclear power plant 35 miles north of the city was shut down yesterday, after a malfunction at 4 p.m. Details are still sketchy, but it's being reported that the main electrical generator malfunctioned "safely," triggering an automatic shutdown of the reactor. The plant's owner assures WPIX there was absolutely no threat posed to workers, nor to the excellent people of Peekskill. (But for future reference, here's the "Indian Point Emergency Guide.") The incident comes 66 days after another generator malfunction shut down the plant, and 600,000 gallons of boiling, radioactive water turned to steam and was released over the lower Hudson Valley. Also in November, a report found thyroid cancer cases in counties closest to the plant are the highest in New York State, and among the highest in the U.S.