http://www.tucsoncitizen.com/daily/local/72973.php
A 5-year-old boy was hit by a bullet that came through the roof of his bedroom in a house in the 1000 block of East 24th Street early Tuesday, police said.
It came from "celebratory gunfire" between midnight and 1 a.m., said Sgt. Fabian Pacheco, a spokesman.
In another incident, a slug came through the roof of a kitchen in a house in the 1900 block of West Riverview Drive at midnight but did not hit anyone, he said.
No one was arrested.
"Every year, random gunfire on New Year's Eve is a major concern for us," Pacheco said.
A bullet can travel as far as two miles in the air, he said, and "what goes up must come down."
In falling from the sky, it can achieve a velocity of 700 feet a second, Pacheco said.
"Luckily, the bullet had slowed considerably going through the roof and ceiling in the little (boy's) bedroom," he said.
The boy, who was struck behind his right ear, was treated at a hospital for minor injuries and released, Pacheco said.
"While we understand that people enjoy having guns and firing them, we encourage them to shoot in a safe environment like any of the shooting ranges," Pacheco said.
Firing a weapon into the air is illegal, and, depending on what happens when a bullet lands, any number of citations can be issued, including for aggravated assault, he said.
if you really want to do significant damage) thats the answer for that distance. I suppose you could use a T-ASM but it is better suited to killing ships. 
