Which facility acts as a focal point when revising an MTR?

The facility that serves as the focal point when revising a Military Training Route (MTR) is the ARTCC (Air Route Traffic Control Center) in whose area the route originates. This is because the ARTCC is responsible for managing the airspace and ensuring safe separation between military and civilian aircraft. When an MTR needs to be revised, it is critical to coordinate with the ARTCC that has jurisdiction over that specific area to integrate any changes seamlessly into the existing airspace structure.

The ARTCC has the necessary situational awareness and understanding of the air traffic in that region, which makes it the most appropriate authority to handle MTR revisions. This coordination helps maintain safety and efficiency in air traffic operations, as the ARTCC can assess how changes might affect other flights and airspace usage.

While the other entities like the ATC regional control center and FAA headquarters play significant roles in overall air traffic management and policy, they do not have the immediate jurisdiction or operational insight that the originating ARTCC possesses for specific route revisions. Local military base control is also important for operational aspects of military flights, but for the formal process of revising an MTR, the ARTCC remains the primary point of contact.