One of my elderly neighbors had a large gun collection. He used to call it his retirement. I told him he should not be showing it to anyone because of something like this. I would estimate his collection was easily in excess of 100k.
I suspect my dog collection (1 85 lb. Pitador and one 105 lb. Great Dane) might might make it unnecessary for me to use any part of my former (Horrible Boating Tragedy, often suffered by Freepers) gun collection in a situation like this. Big dogs are great friends and protectors. Unfortunately, many retirement communities ban dogs over 25 lb.