It's just an advantage of the work I do, and I didn't do anything that anyone else in the same situation wouldn't have done, but I got to properly save a life tonight. I would guess that seconds later I wouldn't have been able to. It's a pretty good feeling when it happens like that.
The only down side is I should be going to sleep about now, but it's left me a bit too buzzing.
EDIT I hope this doesn't sound a bit show offy or big headed, that's not how it's intended, but I rarely talk about work to people outside of work for that very reason, so it feels kind of nice to share in a slightly anonymous way here. It's not the first time it's happened and it won't be the last, but occasionally it hits me how unusual some of the situations I find myself in are to most people.
Oh, and go and do first aid if you don't know it already. You never know when you could find yourself able to help someone.