Erased From the Face of the Earth

What's up with Google Maps? I noticed that almost all the zoomed satellite photos were 'not available', today. I checked some I KNOW were there in the past. They were gone, too.

I was going to blog today about the air traffic at Atlanta's Hartsfield-Jackson Airport when I was there a couple of weeks ago. I was intending to reference a pic that shows 4 planes taking off at once that Google had cached on it's maps, but almost all the zoomed images were gone today, including that one.

I'm curious. Where did they go, and why?