About 35 years ago I tried an Estes rocket to launch a "torpedo" underwater by radio. There were some onlookers who had gathered to watch the launch, which was successful for a few feet. The horizontal 'torp" then broke the surface, went about 30 feet up into the air, and exploded with a pretty loud bang. That was the parachute release mechanism for the rocket. My wife screamed in disbelief, and grabbed the arm of a total stranger next to her, for protection!
Not too safe.
I now use safety goggles even when launching my "improved", CO2 powered missiles from my 1/72 L.A.
RCABS- It's easy to control your own bladder!