The pair are forced to duck as a swarm of black, antiquated helicopters with green triangle insignia swoop over the battlefield, strafing the Uruborean lines with Gatling gun fire. Soldiers in black gas mask and fatigues fast rope downward with MP5's in hand, cutting down the Uruoboreans. One cultist leaps up and begins to chant. Bone claws burst from his arms and shoulders moments before he is caught up in the all-cleansing blossom of a handheld flamethrower. The black helicopters' arrival turns the battlefield into a blizzard, with snow and ice swirling into the air through the sheer power of the rotor wash. Delta Green has arrived.