To the contrary, he's extremely fortunate that his errant, incredibly stupid, and highly illegal bullet didn't connect with either the suspect or a bystander, nor with anything else of importance.  If it had, he'd be facing serious felony charges ranging up to 2nd Degree Murder.  As it is, he very well may be facing 3rd Degree Assault, and at a minimum 4th Degree Misconduct Involving Weapons.
     Alaska law does NOT permit using deadly force to prevent a non-violent property crime, and it certainly does not permit using deadly force to stop a non-violent fleeing felon.
     Compounding the abject stupidity of leaving a running vehicle unlocked and unattended by recklessly shooting at it as it drives away merely illustrates that not everyone can be trusted with a firearm.