After the massacre pick up the scattered ammo. Carefully move along taking down silently two enemy patrols. When you get to the blockade [A] turn left and get through the hole in the wall. Nearby there is a tune for your iPod. Watch out for the guard on the first floor.
Inside search all of the cabinets. One of them contains the M4 silencer. Jump down through the hole in the floor.
Outside you will find yourself in the front of some large lot. Keep your eye on the patrols. On your left-hand side, behind the wood pile, there is a hole in the wall [A]. Crawl through it. You will get to the other side of the camp. This place is guarded by the soldier in the tower [B]. There are also some soldier walking among the cars and tents.
Carefully pass the tents and the watchtower. On the other side find another hole in the wall and through it to watch the cutscene ending the first chapter of the game. During the briefing, when the screen is divided, press the triangle button and then the square button. You will be able to use MG. Find the stairway [A] and drive MG under the desk [B]. Take the camera from there. It would be useful later in the game. There is also an iPod tune in the kitchen.