The Fresno Air Attack Base was established in 1955 By the US Forest Service, Sierra National Forest and is located at the Fresno Yosemite International Airport. The US Forest Service leases office space to the California Department of Forestry and Fire Protection's (CAL FIRE) Fresno/Kings Unit. In 1994, it was completely rebuilt to become a model modern AirTanker Base which includes a modern interagency communication/command center.
The Fresno Air Base responds to an average of 100 calls per year in its immediate response area which spans from the California-Nevada border to the east, Interstate 5 to the west, Merced River to the north, and Fresno-Tulare county lines to the south. On average, the base pumps about 500,000 gallons of retardant a year. With the base’s pumps, four loading pits, plus one maintenance or auxiliary pit (in a major event can be used as a loading pit), Fresno has a possible peak output of 300,000 gallons of retardant each day. The Air base is also approved for the Modular Airborne FireFighting System (MAFFS) with a maxminum of 6 aircraft. there is sufficient aircraft parking for up to 8 aircraft at a time.
The Airbase is owned by the US Forest Service which permanently staffs the base with a forest aviation officer (Division Chief), air base manager (battalion chief), assistant base manager(Captain) and a seasonal staff which is a combination of either three Seasonal or regular fire fighters.
The US Forest service has one Air Attack Aircraft (AA15) a Rockwell Aero Commander 690A and one type 1 or one type 2 Airtanker which is only Administered by the base.