That's another very excellent question. That's the beauty of having a family of three airplanes: the three airplanes are the same in the fuselage area. The main difference is that the wing on the navy airplane is bigger. The navy airplane and the Marine Corps airplane both use Canadian refuelling systems--probe and drogue. The air force version of the airplane, because the U.S. Air Force dominates that requirement, is an air force boom tanker requirement.
We're actually doing a study right now for Canada and a number of the other partners who fly C-130 tankers primarily to see whether.... I mean, there's no problem: the space is in the airplane. The other two airplanes have that system in them and we've reserved the space to put that system in the air force airplane. The question is, do you want to have both systems or do you want to do the engineering to take the air force system out?
There is some very interesting flexibility advantages to having both systems in the airplane, because now you can use any tanker in the world anywhere. We are looking at that as a study right now. It is not a big deal for the airplane. The space is there. The system is in the other two airplanes and it's operating today. The other two are both fully qualified for inflight refuelling today.