Even if Daryl Strawberry was right beside me you wouldn't want me standing at the plate at a critical moment during the world series. Some of the training involved in properly using something like an airway is the hands-on training of actually inserting one in a dummy and the supervised experience of actualling being on some calls in the ambulance as the EMT responsible. This isn't something that just any shmoe can do safely with a little coaching. If someone doesn't have the training then you are far better off giving them a CPR mask and some breathing instructions than trying to coach them through using an airway. Furthermore, if someone needs an airway they ned the ambulance too. If the ambulance isn't there then the airway probably isn't going to make much difference. Sometimes with an airway, BVM + Ox at 100% you might buy a couple of minutes. BTW, if you use an airway on a partially conscious individual, or one that becomes partially conscious due to restoring breathing, they will / may vomit violently and aspirate their vomit into their lungs which may cause bleeding depending upon stomach contents. Are you going to coach the individual with no experience through handling that?