[codewritinfool]

Not as easily if they're equipped with this: http://www.bisbos.com/space_misty.html

[Cthulhu_]

Wouldn't that also obscure the camera? I don't actually know what spy sattelites would be used for besides visual imaging aimed at Earth.

[na85]

Could easily be intended not for visual surveillance but for gathering electromagnetic signals, where an inflatable dome would not be a problem.