If you have played the SOG campaign, there are many enemy units chasing the player. This "Vietnam style" option adds a spawn of limited enemy units that will move to the last known position of the players, the number of these units depends on the number of players and the number of missions to complete. There will be many enemies, but they are not endless.

What exactly does the "Vietnam Style" do? Does it utilize the SOG PF Tracker module? or something else?