It was built around 79 cubic feet of empty space in the belly of the airplane. That gives you the capability to put anything that the customers want to put in there, the skin of the airplane on the belly is non-stressed, so it's open and available to cut holes into for antennas and for sensors to look out. So right now we have two fully retractable sensors in the belly of the airplane. We have brushless starter generators on the airplane to provide a lot of power, so it's built to go out and go a long way, stay out on station for a long time and come back.