You have to be very quick with this one, and essential to have a silenced weapon! (But hide any of your own weapons, as you'll get shot at and blow your cover, until you go back into the warehouse, which is after you've shown your papers).As soon as you have spoken to the first soldier (in the warehouse, at the beginning of the mission), run out of the doors into the court yard, and go straight across from where you are. Open a door (the only one that opens up to now, if it's shut!), and there will be a place to put the papers on the desk. Once the officer has accepted them, run back to where you cam from, and hide behind some boxes at the back (to your right as you come in). Two soldiers will come in, one giving the other orders to unload boxes. Once they have gone, the door opposite to where you're hiding will open, and you'll be spotted and shot at, by a lone soldier who was in the small store room. If you have a silenced gun (you can't do this unless you have one!), shoot him at once, then run and hide in the room he came out of, then wait and kill all soldiers who come in (but stay hidden in that room ), they will come right down to the end of the warehouse. Then venture out slowly, and kill any soldiers in the truck outside. If you are careful, you can pick off all soldiers in the courtyard, one by one, then are free to go about your business! The woman you have to rendezvous with, is in the building at the end of the courtyard (right side, left is where you go after, to finish the level). I found it best to seek and kill all soldiers in that building, before you meet her in the library upstairs, as she might get shot! Hope this help, but if you need any more help, let me know (it's omly a small mission anyway!).