Training Center Petaluma is a Coast Guard training facility in the northern California counties of Sonoma and Marin. Formerly the installation was the United States Army "Two Rock Station" . Approximately 4,000 military students train there each year. It is the only Coast Guard training center or large installation without a major operational component (air station, motor life boat station, etc) or waterfront. The training center is located in a rural area north of San Francisco at . It is about from the coast and west of the city of Petaluma, California, west of the junction of Tomales Road and Valley Ford Road, just south of Stemple Creek and the village of Two Rock, California. The facility occupies more than of land, which include 129 family housing units and 90 other buildings. A small town, the training center also has a movie theater, RV and camping spots, over 10 miles of hiking and walking trails, barbershop and hair salon, tailor, chapel with regular services, bowling alley, and other amenities. Public safety is provided by a Coast Guard Fire Department and a mix of Coast Guard Military Police and contracted private security, though emergency medical services including advanced life support and ambulance transport is provided by local civilian agencies. An on-installation medical clinic provides non-emergency general outpatient healthcare for active duty and reserve service members, while dependents and retirees are seen on the local civilian network. Rating specific training schools Students at the individual "A" schools receive entry level training in one of these ratings: Aviation Survival Technician (AST) Electronics Technician (ET) Culinary Specialist (CS) Health Service Technician (HS) Information System Technician (IT) Operations Specialist (OS) Storekeeper (SK) Yeoman (YN) Graduates of these "A" schools can be advanced to petty officer third class and are then assigned to a new duty station. "C" school training is also offered for advanced training in each of these ratings, including a National Registry Emergency Medical Technician course and others. Subject Matter Specialists and Course Writers Each of the "A" schools at Training Center Petaluma has subject matter specialists and course writers assigned for the purpose of developing up to date course materials and instructional aids relative to each rating. These specialists are usually chief petty officers with substantial experience within their rating. Courses developed are used in the field to help enlisted persons learn new skills in their rating. Advancement is dependent in successful