I know, right!?!? From the sequiences I saw it looket like it started almost as soon as there was vertical motion. It was snugged up, at least as much so as the flight on the day before. The motor was definately in all the way and the Aeropac retainer fully and properly secured, I triple checked. (Side note; Anyone who flys at MDRA and is friends with Bob knows he likes to mess with you by loosening your motor retainer so we all triple check, last one being at the pad:no: ). There was one picture that showed what looked like a small puff of black smoke comming out the top just as the rocket left the rail and the nosecone left the rocket. Wasn't the motor ejection charge. Dan and I both checked that and it looked good; Before and after. Maybe some bypass exaust preasure leaking up around the motor case and into the upper airframe?!? The motor retainer was snug and secure but the motor case did slide into the rocket with no real friction. Best geuss I can come up with. Reguardless, She'll have shearpins next flight. I'll post the pic in question when I get home from work tonight. Maybe you guys can see something I missed.