I only post this to bring up again the importance of having a plan, . . . a backup plan, . . . and really considering the idea of just crouching in the safe room and making the bg come to you.
That and calling 911 sounds better than wandering out into the yard with a knife or gun in your hand. As a young man, I was at a house that was paid a visit by the local SWAT team. Fortunately, none of us were armed and were just standing around in the back yard. The team just seemed to appear.... everywhere at once
. On the roof of the house and the detached garage behind it, through the two gates and a few came over the fences.... surrounded, slammed to the ground and cuffed before we had a clue what was going on. Scary business!