H - This is at the beginning of the level, there is a small concrete wall and it is behind that.

U - This is on a small ledge just to before the 2nd turret.

T - This is in a small gap just after the 2nd bridge.

N - This is on a rooftop just before you go inside the building.

D - This is on the box that is on fire.

E - This is on the ceiling on the right hand side in the first hallway.

R - This is on the wall just before you go through the first door.