Are you an adult ? What do you think your choice would be if you were to deal with a frail lady in a zimmer frame waving a butter knife in a room that she is in by herself .
Would your first reaction be to shoot her ? Zap her ?
Or perhaps use a blanket , a pillow , and a light .
Would you be scared for your life of a 45 kg 95 yr old lady in a zimmer frame. So scared that you would fire at her ?
I guess even you with your forces training would be able to knock her over with a pillow.