What?

There's a spy satellite that may contain hazardous materials that has fallen out of orbit and is heading towards impact with earth. They don't know where on the planet it might fall. Even with computers. What surprises me the most is that

"Numerous satellites over the years have come out of orbit and fallen harmlessly."

Really? Where was I? I don't remember hearing about these. I do remember when Cassini went into orbit in the late 90's and there was a big uproar because the satellite contained plutonium (for power). It had a 1 in a million chance of falling back to earth (the chance of plutonium being released during takeoff was much greater) and yet everyone was freaking out. And now we've had a bunch of satellites that have fallen back to earth, and I didn't hear anything about them. I must have missed something.