One of my riding buddies used to work in the bottom floor of a 2 story office building. Directly upstairs from them is an Army recruiting office. They had an old large caliber WWII rifle in the office to impress the potential recruits. So one day somebody is messing around with the rifle and pulls the trigger. Turns out the rifle was loaded and a round went through their floor into my buddies office. It hit a girls desk and if she had been sitting there, she would be dead.