base station, San Francisco Fire Department Station 4, which in later episodes was located at a converted warehouse (Bldg. 180) on California Ave and US Naval Station Way, Treasure Island. The warehouse still stands, and still has "Angel Rescue Services" and SFFD logos on it. In earlier episodes the air helicopter ambulance base station was located at Naval Airship Square (helipad) by an abandoned Naval firehouse (Bldg. 111) on Pan American World Airways Esplanade and Avenue I, Treasure Island. Interior scenes were filmed on a converted sound stage in Hangar/Bldg 3 at 600 California Ave., Treasure Island. The ambulances used in production were manufactured in 2008 by MedTec Ambulance Corporation. They were trucked back to Los Angeles shortly after the show was cancelled. The two main production ambulances, 2008 Medtec Type III ambulances were sold shortly after, to Franklin Park Fire Department and Hamilton County Ambulance. The four other Type II ambulances were returned to their private leasing company. The show has used places like Alameda Point for filming. One of the destroyed jets can be seen in Google Imagery. Episodes DVD releases References External links 2009 American television series debuts 2010 American television series endings 2000s American drama television series 2010s American drama television series 2000s American medical television series 2010s American medical television series English-language television shows NBC original programming Television series by Universal Television Television shows set in San Francisco