A - This is at the end of the first area, when you finally get into the walkway bunker thing just before you proceed to the next area, look behind you after the 2nd door thing, it will be just outside of the wall on top of a ledge.

R - This will be on the wall on the western edge, it's hard to see, but if you face your camera south while you run north, you will see it when you run by or if you pass it (you can see it pretty good from a distance when you run past it.)

D - This is at the north wall, to the left of the large pillar and ending of wall.

O - This is in a verticle pipe at the warehouse

T - This is on a ledge on the eastern side, just to the south of the complex you are to enter. It is on the very top, look upwards in the horizon.

N - This will be in the top right corner of the red building across from where you entered the area. Use a Plasma Gun to see it easily.

O - This will be in the northwest corner of the map, if you get across to where the VS and the two turrets are, look to the northwest on a bridge like thing. It will be floating there.