Do not see how there is any difference regardless of whether public servant or not. If you are in a life and death circumstance, ideally a rifle - or a shotgun - is the logical choice.
It is a simple matter of the fact that a rifle is a far more reliable "stopper" than a handgun. Not a matter of what you do for a living.
How your actions are viewed later absolutely does depend on what you do for a living. Let's just play out the situations:
Soldier in a war zone gets in a gunfight, uses pistol to fight his way back to the rifle in his vehicle, returns and kill numerous enemy combatants: Good job, soldier. Killing the enemy is your job! Here, take this medal. And don't leave your rifle behind next time.
Cop on the street gets into a gunfight, uses pistol to fight his way back to his rifle in his patrol car, returns and kills criminal assailant:. You're going to have to go on leave while the state investigative bureau determines whether your use of force upon return was reasonable. You'll probably be OK, since your job was to apprehend or stop the guy, and going back with a rifle was probably a prudent way to do that. Try not to freak out over the next 2 weeks while your future is decided.
Civilian on the street gets into a gunfight, uses pistol to fight his way back to his trunk gun, returns and kills criminal assailant: You were doing ok right up until the point you abandoned your retreat and went back into the fight voluntarily. Now you're the aggressor and/or engaged in mutual combat. You have the right to remain silent...
Cop on the street gets into a gunfight, uses pistol to fight his way back to his rifle in his patrol car, returns and kills criminal assailant:. You're going to have to go on leave while the state investigative bureau determines whether your use of force upon return was reasonable. You'll probably be OK, since your job was to apprehend or stop the guy, and going back with a rifle was probably a prudent way to do that. Try not to freak out over the next 2 weeks while your future is decided.
Civilian on the street gets into a gunfight, uses pistol to fight his way back to his trunk gun, returns and kills criminal assailant: You were doing ok right up until the point you abandoned your retreat and went back into the fight voluntarily. Now you're the aggressor and/or engaged in mutual combat. You have the right to remain silent...