I have a police battle idea. make an outer perimeter of cars outside your 'cover' perimeter (half diamond pattern outside a building with a vestibule for heli cover) then take the jerry can and soak them all down. Put a perimeter of sticky bombs just inside this outer 'fire barrier' set of cars. When cops show light up the 'fire' barrier to keep cops away from you so can pick them off and keep chucking nades and tear gas at them. Then explode your perimeter of sticky bombs just inside the outer 'fire' barrier for when the cops get bold and decide to advance on you. then try to put another sticky bomb perimeter down while they respawn; rinse and repeat and stay behind your innner 'cover' barrier of cars as long as you can. All the while you are picking them off with a carbine rifle (grenade launcher ?). The set up for this might take awhile. I'm guessing you'd need about 20 cars to form both perimeters. I bet you could hold your ground pretty long like this. You could try this underneath a bridge too for heli cover but finding a building with a vestibule might be easier because then you dont have to worry about getting flanked. I'm gonna try this tonight. I like seeing how long i can last against police.