[dredmorbius]

Thanks. I was curious about that as I'd heard the term used and was almost certain the context was more recent than the Corona project (1972 end date).

I'm also curious about Keyhole and the project, similarly named, which become Google Earth.

[dsl]

The name of Keyhole, Inc was an homage. They employed some former NRO folks, and received NRO funding by way of In-Q-Tel.