One of my brushes with armed responses, happened when I was still in college.
Cutting hay one day in the fall, 2 canadian refugees decided to have a shootout with 2 armed Canadian escapees. Road was closed, when I was on the way home, police road block, so I ended up going through a neighbor's farm road, to get home. Checked all the farm buildings out, and as I went about my chores, with a 1911 .45 colt in my belt. Cops came up the drive and asked If I'd seen anything, told them no, and no I wasn't worried. They said OK suit yourself. Cut and raked hay armed with the same gun with me. Went to bed, that night, and I heard a car crunching gravel in the driveway, and the lights went on down by the garage, dead quiet, middle of the night, I was pretty sure it was a cop in a plain brown wrapper sitting out there, so I slid the screen up, and with the lights out, racked a shell in the 870 wingmaster pump. Cop lit up his blues, and waved, and I went back to sleep.
Something mighty re-assuring about just the sound of a round being racked, in that old 870, on a calm silent summer night...