Well, that was appreciated - believe me I needed to be resuscitated because I am drowning trying to cross the MOAT. Thanks for one in my wheelhouse Ben. Now here is an update of sorts, the new acronym from the American Heart Association for first responders is CAB (+D) The "danger, response, send" part are pretty much for civilians, and from what I can see are Aussie specific; though certainly pertinent. the AHA changed the order in 2010 because immediate compressions got blood moving to the brain and heart which is vital (two other common statements are "time is brain" or "time is heart") AND they can be done immediately whereas checking for a patent airway and circulation (especially in someone with a weak output) can take time. It is also why, particularly for non-professionals, mouth-to-mouth is no longer recommended. It is mostly done wrong, and takes time away from the important part, compressions. So, there is 10 minutes of your life you'll never get back - but rapid intervention is soooo important in preserving cardiac and brain function that I had to suggest we take a CAB to get there faster!
Great puzzle, glad I did not get a chance to pre-test it because I loved solving it.