It seems to me that the folks in the field, or combatant commands, all subscribe to the practice of joint operations and joint commands. After all, it all about accomplishing the mission.

The folks hanging out in MACOMS and Service level organizations are much more likely to have a bit of difficulty grasping the concept. Their world view, i.e. their performance appraisals, a less directly linked to immediate tactical and operational success and more to budget concerns. Not any less committed, just a slightly different perspective that can make them view joint as a dirty, or at least slightly scary word.