I was playing last night and was a little too focused on reaching a new safe house (trying to get more supply credits to unlock a new part of the base). I ran down a street, and not paying attention to what was going on, tripped a checkpoint mission. Before I knew it I was in the middle of an intersection, no cover, with 4 or 5 Rikers in front of me and another pair behind and to the right, all at my level or higher! I spun left and headed for an abandoned car, dropped a flame turret while running and made it to cover with about 50% health. Popped a healing station and unslung my M1A while a notice appeared that JTF reinforcements were two minutes out - Code Brown! What ensured was a whirlwind of grenades, dive-rolls, snapped headshots with the marksman rifle and hurried switches to my M4 to deal with shotgun wielding gang members charging and flanking my cover. The fight ended with JTF troops appearing behind the third and last wave of Rikers, catching them in a crossfire while I picked off the last few bad guys, making the last kill with my sidearm when a Riker took cover near me still shooting at the JTF. I started the fight with a full load of ammo and finished it with no AR ammo and about 1/2 a mag. of marksman rifle ammo left, no grenades of any type and 1 medkit! Probably one of the most insane and intense 3 minutes of gaming in my life. Freaking exhilarating!