Opening the door may have saved everyone in this case.
Did they try to communicate with the person? Look through the widow to see whether the person is armed? Flee? Get a non lethal weapon like a bat, knife, pepper spray? Hide? There was time for the home owner to go get a gun before the window broke. I assume, since this is USA, that it was already loaded (😂) so I’m sure it didn’t take too long, but did they try ANY of those things? Unlikely, and that’s unfortunate.