I know jointness is the big thing. The question I have is this: how much jointness is a good thing? Nothing is free. The more jointness there is, the less specialization the services will enjoy. For instance, say the Air Force became really good at providing the Army with close air support. If the fighter-bomber pilots spend most of their time practicing supporting the Army (an unlikely prospect, but bear with me), how proficient will they be at the fighter role? Isn't there a point when the costs of jointness outweigh the benefits? While I don't see it happening soon, I'm concerned that the US may eventually sacrifice the benefits inherent in specialization for lesser benefits from jointness.