I totally agree, this is an essential course to take, along with Rescue Diver too. Then you REALLY know your stuff!
My instructor also taught us a few extras that ADI doens't, cos he's got qualifications in tek diving etc etc (the list goes on let me tell ya!) and likes to bring in other things that are relevant, to add to the course.
He did all the EFR stuff with us, then tailor-made about half of the of the role play to diving related accidents (as we were all divers on the course, and many were going on to take Rescue Diver the next day). It was great because the EFR manual doesn't actually go into anything about diving accidents, as non-divers can take the course too.
He also taught us that, if there's no O2 available, you can use Nitrox instead, because of course it has a higher % O2 in it than normal air! Seems so obvious, but you'd be suprised how many people don't think about it.
Even if you have to do mouth-to-mouth, you can take a breath of the Nitrox yourself, then breathe into the (it's victim when their not breathing right?!), because you end up bretahing out a higher % O2 than you would normally.
And if they ARE breathing, the regulator for the Nitrox cylinder works as a demand valve!
We were also made to assemble to O2 kit blind folded. I went last, and the guys on my course were so p**sed off that I di it faster than all of them!!
It all got rather complicated when we did a scenario where one guy had DCI and collapsed, so people were attending to him, whilst someone checked his buddy was alright (as he'd have dived the same profile as the collapsed guy, and therefore would also be potentially at risk). It was all going well til our instructor said "right, now his buddy is gonna collapse too.." We ended up with one guy on Nitrox cos he was breathing on his own, and the other guy being given mouth-to-mouth with the rescuer using pure O2 (which was only on a demand valve).
It was complicated as the whole group was involved, to simulate a diving group, and therefore there were lots of people doing a lot things. But it was excellent at the same time, as everyone knew exactly what to do, got the "situation" under control, quickly and effeciently. Even though there WERE a lot of people involved and a lot of things to do (my instructor can be such a bugger... "now he starts breathing on his own"... "now he's stopped again"... and sneaking in behind us and turning the O2 off! Which we noticed right away fortunately!! Had to make it complicated didn't he...) everyone got it right, spot on. And it's such good preparation - if that ever happened for real, I know that noone on my course would panic, and everyone would know exactly what to do.
My instructor really put us through our paces (the amount of times we had to switch the Nitrox/O2 between victims cos he kept telling us now one's breathing on his own, the other isn't, now it's switched...) but I think that's really good, because now we are super-prepared!!
You know on the video, there's a guy that falls off his bike and gets hurt? Well, we decided it looked like the EFR guy, who was at his car, distracted him on purpose, cos the bike guy looks at him, waves, then crashes.... Our instructor was laughing and telling us that we'd all be doing that now, just to be able to say "hi, I'm an Emergency first responder, may I help you?"!! We also had a laugh at the "hi, my name is your name..." but in the maual.. Oh, and that girl... "Granma, I'm an Emergency First Responder, may I help you?" Like your nan is gonna sue a member of her own family huh! More likely to if she DIDN'T help!!!