S. Korean Navy (and definitely U.S. Navy) will sail out to Yellow Sea to recover debris from the N. Korean booster rocket. According to news report, it was broken up into 270 pieces. In N. Korea’s previous rocket launch, their booster rocket fell into sea more or less intact, and its salvaged parts were in good condition. This time around, maybe N. Korea attached a device designed to blow up the rocket after it was used. So it may be more difficult to piece together rocket components, but in time it will show what kind of components are used.