I left for about 1 1/2 hours and came home. I walked in the door and it was silent. Oh, oh....then one by one the three cats came up the basement stairs. All alive and all in one piece. Not friends but all alive. This is a very good sign. Lots of vocalizing from Boo, but that's ok. Ricky backs down immediately, so he's accepting his place in the pecking order. Another very good sign