You have to learn how to do without support. You have to make do with what you have. If you don't have a building, you use tents. So you just have to be able to be very flexible and make up things as you go along. It's like working in disaster, only you're thousands of miles away from home.
Most people speak a different language.
You're in the middle of the war zone, and you have to watch out where you step. Well, security we'd look at several levels. Of course, you're always worried about the security for the staff, but when you're dealing in an area of conflict, you always have to clear the scene of potential ordnance mines. On exploded ordnance, we had a situation in Rwanda, for instance. It was supposed to be a low-tech war, no mines laid, and so we were sure there was nothing on the site.