Indiana has the Castle Doctrine:
If you can get past the train metaphor (which is hard because they really do their best to beat it to death),
this year-old article from the NRA has a good summary of which states enacted laws that eliminate the duty to reasonably retreat from an intruder in your home. As of October 2006,
Castle Doctrine [was] the law in Alabama, Arizona, [Florida,] Georgia, Idaho, Indiana, Kentucky, Mississippi and South Dakota.
I note that contrary to my naive political expectations, California, Michigan, Oregon, and Texas are all suspiciously absent from that list. But not to fear! In the past year,
eleven more states have adopted some version of the Castle Doctrine as law:
[As of October 4 2007], the Castle Doctrine has become law in Florida, South Carolina, Georgia, Alabama, Mississippi, Louisiana, Tennessee, Kentucky, Indiana, Michigan, North and South Dakota, Kansas, Oklahoma, Texas, Arizona, Alaska, Idaho, Missouri and Maine. . . . By far, the popular concept in those states has been the “stand your ground” approach that permits a homeowner to fire upon invaders at first sight.
Found it here:
The Castle Doctrine: A State-by-State Summary « tekel