If it happened as the latest report indicates, Hayes should get off.
1. If Will said he had a gun and was heading back to his car...case closed on that. Hayes had the green light to shoot. Even if and expecially if, you're licensed to carry, you can NEVER, NEVER, NEVER, let someone know you have a gun or flash it.
2. I don't believe he should even get in trouble for hitting the wife as he's not a professional and he was "in fear for his life". Also, was there a felony committed by Will to which his wife would have been an accomplice? If so...
...technically she could be charged with his death....Lord forbid.
3. Excessive force..."Your Honor, I'm not a trained law enforcement officer or military. I'm not even a novice when it comes to shooting."