Personally, I commanded three flying units (and Vice-Command of a fourth non-flying organization), two as O-5, two as O-6. I did it because I could help the mission, which I enjoyed, and it was fun. My incentive was to enjoy myself and mentor my new guys, not to make O-6 or general. I think the simple goal vice the "be the CSAF" goal, made the difference. If they wanted to fire me, so be it, I was still having fun.