What goes up, must come down, and that 's applies to bullets shot up into the air.
Stockton police officer Joe Silva says too often revelers substitute pistols and rifles for fireworks to celebrate the 4th of July.
"Someone hearing something come through the roof, and later it is discovered that it was a bullet," notes Silva.
Silva says hundreds of shots ring out during the 4th and New Year's Eve. Those bullets can travel a mile into the air and come down at 150 miles an hour. At that speed, the bullets can easily punch through a roof or a person.
Silva recalls an incident from a few years ago. "We investigated a crime out in the Weston Ranch area, where someone heard some gunshots happening from down the street, and they looked out their window and actually got struck by a bullet."
Police will be out in force investigating reports of shots fired.