Yea, ok. It takes me 1.2 seconds to draw and fire three rounds. They come in with AR, I shoot them. I don’t understand your confusion?
The odds just seem so against doing much good in that specific kind of situation. Other situations, definitely, I can see and have known about how they save the day.
Incidentally that SOB and his crazy wife left behind not just a terrible trail of grief and tears but an orphaned 6-month-old child. There will be terrible cost to society yet to be paid.
The child will probably qualify for Social Security death benefits because the father was gainfully employed for 5 or more years (about). The critical victims and even the ones not so badly injured; their lives have been altered in a few seconds. Some will no doubt need disability for the rest of their lives if there is any left to be had.