The correct answer to this open question is the following.
Derived from the integration of Service cultures and competencies, and requires teamwork amongst all Services and Military Departments to accomplish objectives in the best interest of national security unfettered by parochialism. Jointness best describes this concept.
In the United States Armed Forces, the use of the term "jointness" means that permanently cooperation between the Army, Navy, and Air Force is important to have success in any military operation and the protection of the safety of the United States. This "jointness" is necessary to accomplish missions efficiently and effectively.