nope it was retired because something is way way faster now
Satellites. That’s what replaced them. Got enough satellites in orbit that we can photograph whatever we want without the risk of detection. Now we got drones that can hover.
“nope it was retired because something is way way faster now”
Photons traveling 200 miles were and are much faster (spy satellites). With so many up there not sure if the old “do stuff while no satellites are overhead” trick works anymore.