No if you bother to read something about what COPPER CANYON was all about (airbreather SSTO).Wouldn't this project have been linked to the Copper Canyon program?
The orbiter stage was underslung à la BETA/III don't see any holes up top
It appears to have the same serial number as the Military Aerospace Platform (i.e. 92-306)remember someone suggested via catalog numbers that this was a second stage to abovementioned MAP