Which statement is TRUE?

The statement that the Vice Chairman of the Joint Chiefs is senior to the service chiefs is accurate because the Vice Chairman holds a significant leadership position within the Joint Chiefs of Staff framework. The Vice Chairman serves as the second-highest-ranking military officer in the U.S. Armed Forces, directly supporting the Chairman of the Joint Chiefs of Staff. This role inherently elevates the Vice Chairman above the service chiefs, making them a pivotal figure in strategic military discussions and operations.

By being positioned at this senior level, the Vice Chairman has a broader view of military capabilities and strategies that encompass all branches of the Armed Forces, allowing for effective coordination and communication among them. This setup ensures that the Vice Chairman not only represents the interests of the entire military structure but can also influence joint operations and strategic military decisions significantly.

This understanding of service hierarchies within the Joint Chiefs of Staff emphasizes the Vice Chairman's leadership and advisory capabilities as they work alongside the service chiefs, who are primarily focused on their respective branches.