This video was taken at the first ever public launch of the Mystical Rockets Tube Missile Mark 60 X2 2 stage Model Rocket.
The video was taken at NERRF 4 in June of 2008.
The booster was a D12-0 engine, with the sustainer being an E9-6.
Unfortunately, the sustainer was blown by wind back over the flight line and into a fast moving creek and was unrecoverable. The booster was recovered on the field.