I am at the end of the CIA Headquarters level in Splinter Cell and am having a very hard time completing it. I have read a walkthrough, and it states that you should (or can) shoot the armed guards with either an Airfoil (preferably in the head, won't kill them) or with a Sticky Shocker (which will basically knock them out without killing them). I equip both of these items (at seperate times) in efforts to take guards out without killing them (or the mission ends) and end up killing them anyways. I've read the manual to see if I am equipping the items incorrectly, and it looks like I'm doing it right. In short, how in the heck do you use the Airfoil and/or the Sticky Shocker without killing the guards? As an aside, THIS GAME KICKS ROYAL A**!