In November of 2007, Joe Horn spotted two men breaking into his next door neighbors home. He called 911, then went out, confronted the two men and wound up shooting them.
Today, a Harris County grand jury refused to indict Mr. Horn -- in plain language, the District Attorney was not able to convince nine out of twelve "good men and true" that Mr. Horn had committed a crime.
Under the Texas Civil Practice and Remedies Code, Chapter 83, Mr. Horn is now "immune from civil liability for personal injury or death that results from the defendant's use of force or deadly force".
Note that is Texas State Law -- I don't think Mr. Horn has a similar immunity under Federal Law.
It's a decent end to a tough and terrible set of circumstances.