The Navy men would be too busy heading for the nearest bar to do any fighting. They'd leave.
The black belts would then kick the stuffing out of the street fighters when the former saw the latter reaching for knives and various weapons.
Then the cops would get beat up by the black belts while the former were walking around handcuffing the street fighters and reading them their rights.
Then the black belts would turn on each other, knowing that they presented the greatest risk, and beat each other senseless.
The firemen would throw the downed combatnats over their shoulders and carry them to ambulances and squad cars. But being modest, as firemen are, they wouldn't claim any victory.