Sounds like another "test" session for new military hardware to me.

Fly the plane to this Cordiant, set the autopilot, and eject. We will pick you up. A few minutes later: "Darned, there was a mishap, the piolet ejected, and was treated for minor injuries. The plane has flat disappeared. The mishap is under investigation. We will let you knw if we find anything."

Then into the other mic, "Tell the boys the test was successful."