He can run (sometime for a while), but he can't hide.
As I've posted before, when the hunt team catches up with him, just take fingerprints and a DNA swab. Bury the body deeply. Let him become a D.B.Cooper legend.
Although many good citizens own and carry guns, keeping communities safe still fall on those who carry badges.
In a gunfight, even if you do everything right, you can still get killed.