hey there...anyone got past that chapter..cause i cant find me a way in to the miliotary base or something i just around in that town and dont find anything..pls

Goto the Military base and you'll need to shoot some men, and then a helicopter appears, just block its bullets until it flys away. Walk over to the gate and a man will shoot at you from a window behind you, kill him and the doors unlock ... you then need to head into the building he was shooting from, its through the skull gate.

Later in the military base, when you gun down the helicopter for good, what happens then? The platform where the helicopter fight occured doesn't seem to have anything on it... I'm stuck on what to do next.