You're a Marine right? If so, you'll report in to MATSG-21(NAS P'cola). Basically enter the front gate and drive that road straight through base. Landmarks along the way: Penair Fed. Cred. Union on Left, a stop light, 2nd stoplight (you'll see a small PX on the left), the road will become a one way (stay on it). You'll come to a 'T' intersection where you can yield to the right or turn left --- you want to turn left. Follow that road all the way to the end (there'll be a stop sign where the only logical direction to turn will be to the left). MATSG will be in front and a little to the left. You'll see the sign out front. Just go in the front door to the duty desk.