I put this in chat because I really just wanted to say it where people would see it.
Do a first aid course.
Encourage your children to do a first aid course.
Talk to your teenagers about looking out for their friends, what to do in a bad situation, how to get help, have a plan for unexpected events.
Learn how to put somebody in the recovery position if they faint, fall, or have too much to drink, take something they shouldn't.
Such a simple thing to do that could save a life.
My son would be alive today if his friend had just turned him on his side.
I live with that every day of my life.
It happens more often than you would think.
St John's Ambulance and the Red Cross do courses, I am sure there are more.