Amateur tracking of Black Satellites

From Wired 14.02: I Spy

Sometime around dawn on the first day of the 1991 Gulf War, Ted Molczan was woken by a mysterious phone call. Molczan had been up until 3:30 am in his Toronto apartment, riveted by the televised images of Tomahawk missiles raining down on Baghdad, so he was groggy when the phone rang. A male voice with a thick accent said: "I know you're involved in satellite tracking. I'm interested in doing a trade." The caller offered Molczan information on the orbiting patterns of a constellation of eight US satellites. In exchange, he wanted to know the orbits for the CIA's KH-11 "Keyhole" satellites - from space they can discern an object as small as a softball, and they were sending US forces hi-res digital imagery of Iraq and Kuwait.