The hand Wild Bill Hickok was holding when on August 2nd 1876. Do you know why it’s called the Dead Man’s hand, and not just “Two pair with a disputed kicker?”
Because Jack McCall shot Bill’s brains out the back of his head with a Colt .45.
It was the only day that Hickok did not sit with his back to the wall.
Keep your back to the wall whenever possible. Watch entrances and scan windows from time to time. Be aware of your surroundings.
You want to see the zombies attacking. You don’t want to be ambushed by them.
Source: Multiple Books, Internet