< Give me a break! Rockets explode all of the time. Plus, I would guess < some of the parts they are using are old. I have the feeling cracked Cracked seals were specific to the solid booters of the Shuttle launch system. < seals could once again be the problem. Also, rockets don't rely on < computer controls. These are 20-year old technology. It's unlikely < they have anything more than a bunch of servos like in a model car. B0y are you wrong. rocket/missle technology was using computer hardware as early as the late 50s. I know the first hardware I could actually hack was from a minutman missle a rather strange serial word/math disk based machine that wasn't fast but apparently enough to do the job. Allison