man, this rocket stuff gets very interesting.. my brother was into it, we had to drive two hours to clear the freakin' airspace of the airports for him to launch the thing!! absolutely insane... some of the guys up there were putting bowling balls on the noses of the rockets and parachuting them down onto a target

as for me - I got the hell out of rockets when every one of them that I put up either went on a very tall roof or into a very tall tree

to get into some of the bigger engines you do have to get a license to buy the parts... but these are the rocket engines that put them into stratosphere!!