Stealth satellites

On Yahoo News the “Anatomy of a Spy Satellite” story shed a little light on hitherto secret developments in stealth satellites since the 1960'ies. I was quite surprised that they started doing that so early, but the former east block always had better anti-satellite weapons than the west, so I guess the development was logical. Anyway, the satellite program in question is called MISTY, and it is not an acronym in spite of the spelling.