Without firing a shot.
Man drives home and finds a burglar exiting with a TV and CD player, blocks the criminal's vehicle and calls the cops. After thug rams the truck (attempted murder, perhaps?) and approaches the homeowner (I'm sure to give his stuff back), homeowner pulls his handgun from the glove box and brandishes it to the burglar. Burglar flees on foot
It's not reported whether the homeowner had a permit to carry, but no arrests were made of either the homeowner or the burglar.
Under the gray area of Iowa law if the homeowner had shot the perp, he could have been prosecuted for attempted murder\murder. I say gray area, because it is left up to the discretion of the county attorney whether to charge anyone. Ramming a LEO's car is considered a serious threat against their lives, so I would think the homeowner could have felt threatened. But if he still had a chance to put his truck in reverse and leave, then he had a chance to flee and could be charged.
It would have been a good idea if the legislature cleaned this up during the last session.
Via - Right of Middle