"pd will be on scene"
I live in a very rural area (60miles to the nearest level 4 hospital). On most wrecks, we are on scene and gone before LEO arrive.
"But most people are going to wait for pd if possible"
Not with a critical pt.
About the firearm on scene. If we have left before LEO arrive, they are just minutes behind us.
Perks of working in a big city. Pd is usually closer or as close as we are. Just speaking from my experience. Yours is obviously different.