Hopefully he has a full and speedy recovery. It was lucky he was close to people that could offer assistance straight away giving him the best outcome possible.
Now I am over 50 I have been wondering for a while about acquiring an AED but havent looked into it. I hate a cousin (just under 50 at the time) that had a heart attack whilst camping in a remote area with a 2 hour drive to help. Fortunately it worked out for him.
Help is also closer than ever with the right gear and thinking about the money people spend on their cars, boats and vans, carrying life saving equipment like an AED is probably not that expensive.