I remember my first time alone in the house after my divorce-ex took the girls. I was watching an action flick and was tucked in for the night-lights off-door locked. Then someone knocked on the door. I hit the deck and crawled down the hall. Got to my room and called the neighbor to investigate. Poor guy. After the divorce I used him as the macho man in my life! He talked with the guy at my door-he had a flat tire and needed to call for help (pre cell phone era.) I remember being jumpy!
I can identify with you, Overcomer, lol.
One night the computer's volume, two doors down from my bedroom had been left full volume.
You know the sound of a slamming door aol has when folks sign off?
Well..... I heard it... my girls heard it.... I was up and moving....
before it stopped reverberating in the entrance hall.... where it sounded like it originated from

I had the bedroom door closed and locked.....
chair wedged firmly under doorknobs....
best weapon (available) IN hand....
and was just wondering where to stuff the children while phoning my 76yo female pal to come search the house with me.
She was my version of your macho man, lol.
She arrived with 7 dogs, one quite large thankfully.
We searched the entire house, top to bottom.... took about 30 minutes of snatching open closet doors, jumping back.... listening for a dogs to whimper.... perk up their ears, lol.
I've hit the floor and rolled on a couple occassions, too.
Nice you had a male nearby to help you.... though 76yo ladies are more a comfort than you'd think; )