What goes up must come down.
There are a few out there who think its a fine idea to shoot guns into the air for new years and other celebrations, without thinking about where the bullet might land. Of course, its a practice that can kill people. We have also seen roofs damaged by the falling bullets, piercing the shingles, sometimes going through the decking as well.
Here are a couple of pictures of the last roof we saw that held a fired bullet:
Obviously, that spot is going to leak.