This blows me away. I worked on systems that processed the signals from these satellites at the ground sites. At the time, these were highly classified, requiring background investigations and a polygraph to be granted access to know about these things. All our work had to be performed in a SCIF and we were forbidden to discuss our work with anyone not cleared to know. The form that we had to sign when being briefed stated that this was a lifetime commitment. I never would have believed that the NRO would declassify this system.
mkmk•1h ago