Income. Pure income. When our Astronauts used there capsule to get to space doing the time of the Space shuttles ending we paid millions and I’m not giving it the just due as it was more then that, each flight we went back and forth. Now the Russians are paying us dearly to use our flights. Not to mention, it’s a contractual deal. Russians have already made their notice of no longer utilizing the iss after such date and going to go into venture with the Chinese and them building their own. I’m sure there’s other countries doing the same intentions to use China’s like Iran, others that haven’t their own funding to building their own. In my thinking, it’s the whole spacewar setup.