Mass-diver
NES Member
It appears that this was mutual combat, and that may preclude his ability to claim self defense. In a one-versus-one fight, if your attacker is unarmed and there is no dramatic disparity of force (e.g., 110' weakling versus Andre Arlovski), it may be very to convince judge or jury that deadly force was justified.
l.
(To continue to play devil's advocate), there are several published reports that the shooter in this case is a "brain aneurysm survivor" Obviously there are a number of way to treat cerebral aneurysms, but certainly the possibly exists that any blow to the head may have caused severe damage to the shooter. I.e. if the firefighter was yelling "I'm going to smash you head in," the shooter may have felt that deadly force was called for.....