I have a 2nd floor office with a window overlooking a parking lot. The all delivery trucks park right underneath my window to make deliveries in my building. I can tell you that it is routine to throw around packages when sorting them for delivery off the truck-some even get dropped off the truck to the ground. Also, when a large cart is used to carry the packages into the building packages are stacked by address, not size shape and weight. This could mean large packges are crushing smaller ones underneath. Now, this is standard practice for my office-I can't say it is anywhere else...