Some military offenses are not transferable to civilian law.  Many Americans are allowed to possess firearms after assualting a family member.  But it has to be a felony.  Misdemeanor assualt like a DV4, angry men keep their guns. Apparently assaulting a family member is not always a felony in Alaska. 

While a bad conduct discharge does not always prevent you from purchasing a gun, it does prevent you from a concealed permit or right to carry permit. There are thousand of bad conduct veterans who own guns legally.

Good Guy with a gun?  Finally after 100's of mass shooting with plenty of good guys around, the NRA has something to hang their hat on with this one, and singular response by a citizens.  Cops would have got the guy eventually before he did more damage. The posse was coming.