The Charged Aerosol Release Experiment, CARE I, was launched from
Wallops Island on Sep 19, creating a cloud in the ionosphere that
was widely seen in the nightime sky in the eastern United States.
The rocket was a Black Brant XI (Talos-Terrier-Black Brant)
not a Black Brant XII (Talos-Terrier-Black Brant-Nikha) as had been
widely reported; it therefore got a BB-XI '39'-series flight designation,
NASA 39.009DR, rather that a BB-XII '40'-series number. The rocket
did indeed have a Nikha motor, but not as a fourth stage - the
motor nozzle was removed and the motor was burnt in a test to release its
propellant as a cloud of dusty plasma, studying its effects
on the upper atmosphere. In this role, the motor was counted as part
of the payload and not of the launch vehicle.