Final answer:
STARS is deployed in Terminal Radar Approach Control Facilities across the U.S., and does not have a fixed number of geographic regions as it aligns with operational needs rather than fixed geographic boundaries.
Step-by-step explanation:
The Standard Terminal Automation Replacement System (STARS) is used by air traffic controllers in the United States to monitor and manage air traffic in the vicinity of airports. The STARS system does not directly correspond to predefined geographic regions, as it is deployed in various Terminal Radar Approach Control Facilities (TRACONs) across the country.
These facilities are responsible for managing air traffic in their respective airspace sectors. While there is not a specific number of STARS geographic regions, the system is installed in facilities that are distributed throughout the country. These can be aligned with major airports and their surrounding airspace sectors, though the exact layout of their locations is based on operational needs and air traffic flow demands, rather than fixed geographic regions.