Army of Two Tips

Afgan level Cases.
#1: This one is on the winding path behind the first rocket you come past. After planting the bomb turn around and there is a path there.

#2: When you see the body guard (heavy armour guard) kill him and everyone else, follow the path and there is a plat form you walk up. Its there.

#3: Before you enter the room with Hicks there should be a long corridor go right to the end and behind some boxes there should be one.