Originally Posted by j.i.wilson
Please don't go telling me it's dangerous, its not. If you are willing to let hem off on a 5m RIB, letting them go in the back garden cannot be any more risky.
Well there is inherently some risk in setting off a flare - very very occasionally it goes spectacularly wrong. Now in a legit emergency clearly that risk is outweighed by the impending danger but in a backgarden there is less "benefit". Although whether it is any more dangerous than any of the other explosives you set off for fun is a different question!
There is however one potential downside of rocket flares in back gardens: they are not necessarily out (or "cold") when they land. At sea this is likely to be of no consequence as it will most likely hit the sea. If it lands on dry grass, a neighbours shed, a flat felt roof etc - I could be an interesting night...