Martin, as usual, I find messages from you and a few specific others to be very informative. Yours are on my "must read" list of messages.

With regards to your comment:
b) is it safe for me to get and be near the patient?

Is this where you include "Secure the scene so that no one else gets hurt" including me.

I do tend to help at accidents when I might be the first person on the scene and my first thought is "What can I do to make sure it gets no worse and no one else gets hurt."
If someone needs critical first aid and it is attempted by a trained individual who stops to offer assistance, the situation only gets worse if failure to warn oncoming traffic creates more trouble and perhaps additional injured; excluding a large vehicle with flashing lights, etc.

I am sure it is part of your "process" in these situations and I think you automatically include it as opposed to pointing it out specifically.