This was our first time launchin' model rockets, and all four o' our launches were successful. Avast, me proud beauty! Our first launch wasn't filmed, me bucko, but that engine was a B4-4 or somethin' and didn't go as high. I then used C6-4 engines and those went nearly out o' sight. Ya scallywag! Lots o' fun! T' kids loved it, ya bilge rat, and I had a blast! Estes ready-to-launch starter kit with C6-4 engines.