Get out of it, Suzyangel, you are just trying to cause the kind of panic which assumes everyone over 18 is a paedophile, every situation where it does not confirm to your ideas of" Elf and Safety" is criminal and prosecute the lot of 'em. And all 17 year olds are maniac irresponsible yobs.
How will anybody ever learn responsibility if they are never allowed to assume it? The son will be old enough to fight and die for his country soon, so if the parents are happy they are responsible youngsters, with back up they should be fine. I often took my patrol of scouts out for several days at younger than this, alone but with reachable back-up. There are many children who are carers for their parents at 13.
I really think you and your ilk are the cause of many of the problems, making people panic, and never allowing young people to demonstrate they can be responsible.