Taverny Air Base

Taverny Air Base is located in the communities of Taverny and Bessancourt in the Val dOise departement of France, twenty kilometers north of Paris. Until 2011 it was the headquarters of the French Air Force nuclear strike force, with an underground command center.
The base is divided into three tiers with an area of approximately 15 hectares:
The third tier is at the top of the hill, with facilities for secure military communications.
The first tier is underground in a former gypsum quarry beneath the Forest of Montmorency. The facility comprised the hardened command facility for the French Air Force.
The second tier is on the surface, and provided support services for the underground command center.
There were no aviation facilities apart from a heliport.


1. Description
The base is located on the flank of the heights of the community of Taverny, with the hardened facility between 70 and 80 meters below the surface in the former quarries. The tunnels are large enough for trucks to enter. The underground climate is described as warm and dry, but the tunnels require monitoring for water penetration and dissolution of the gypsum. Somewhat more than 1000 personnel are employed at the base.
The facility is provided with backup power and an independent water supply. A 2000m² Faraday Cage was completed in 1993 after six years of construction - one of the largest in Europe.

2. History
2011: BA 921 is disestablished on 5 July 2011.
1957: The creation of the Air Defense Operations Center Centre dOperation de la Defense Aerienne - CODA.
1941-1944: During World War II, the Germans converted some of these tunnels for industrial use. The SKF ball bearing factory was moved there from south of Paris. At the time of the Allied invasion, the manufacture of ball bearings had been started. The two main tunnels were connected and an entrance structure with gates was constructed. Before their evacuation of Paris, the Germans destroyed the equipment in the tunnels. Several places in the area of the plant show evidence of fire. According to a villager, the Germans used oil fires to destroy the equipment. This caused cracking and falling rocks. Mines and booby traps were left behind in the tunnels and the nearby woods; these were removed, along with the remains of the plant, by the U.S. Army. There is no evidence that the Allies bombed the tunnels during the occupation.
1992: Installation of the Special Operations Command Commandement des Operations Speciales - COS.
1967: Installation of the Strategic Forces Operations Center Centre dOperations des forces strategiques - COFAS underground.
1946: The French Air Force used the quarry as a depot.
2007: The Air Operations Center moves to BA942 at Lyon Mont-Verdun. At the same time, the Air Defense and Air Operations CDAOA moves to BA117 in Paris and the Air Information Center Centre de Renseignement Air - CRA moves to BA128 at Metz.
2006: Special Operations Command COS moves to BA107 at Villacoublay.
1963: Creation of BA921, attached to the 2nd Air Region, and the installation on the surface of the Strategic Air Forces Command Commandement des Forces Aeriennes Strategiques - CFAS.
1815: First commercial exploitation as a gypsum quarry.
1961: The creation of the Territorial Air Defense Staff Etat-major de la Defense Aerienne du Territoire - DAT and the Air Force Air Defense Command Commandement Air des Forces de Defense Aerienne - CAFDA. These organizations were dissolved in 1994 and replaced with the Air Defense and Air Operations Command Commandement de la Defense Aerienne et des Operations Aeriennes - CDAOA and its Air Operations Center Centre de Conduite des Operations Aeriennes - CCOA.
1988: BA921 takes the name "Freres Mahe" "Brothers Mahe" in English in homage to three brothers killed in the command of their aircraft.
2000: BA921 was attached to the Northern Air Region.

3. Nuclear deterrent
Taverny provided information to the following organizations:
The Meteorology Center for External Operations Centre de Meteorologie des Operations Exterieures - CMOE
The commander of the strategic air forces Commandement des forces aeriennes strategiques - CFAS, which constitute one leg of Frances nuclear deterrent.
The Military Air traffic Control Direction de la Circulation Aerienne Militaire - DirCAM.
The Analysis and Simulation Center for the Preparation of Air Operations Centre dAnalyse et de Simulation pour la Preparation des Operations Aerienne - CASPOA.

4. Other facilities
A similar Air Force facility exists northwest of Lyon at BA942 Lyon-Mont Verdun. The French Navys counterpart facility, controlling the ballistic missile submarine strike Force oceanique strategique - FOST, was located about 20 km to the south at Houilles, Yvelines.

Mayor of Taverny in 2014. Taverny is served by two stations on the Transilien Paris Nord suburban rail line: Vaucelles and Taverny Air force base 921 which
the site from the now - deactivated headquarters of the French Air Force at Taverny Air Base BA921 near Paris, with an underground alternate strategic
located in an underground facility on Taverny Air Base Base aerienne 921 Freres Mahe near the town of Taverny In radiotraffic it uses the tactical
of Base aerienne 104 at Le Bourget, and later under the control of the French Air Force hardened command center at Base aerienne 921 at Taverny at the
July 2015 Dijon Air Base BA 102 was vacated on 30 June 2016 Creil Air Base BA 110 vacated on 31 August 2016 and Taverny Air Base DA 921 the former
the work was finished, the huge underground of the former Taverny Air base located in Taverny a few miles northeast of Paris, sheltered the largest Faraday
it assumed a stationary position at an altitude of 35, 000 feet. At Taverny Air Base its presence was confirmed by a 50 - second radar track. In retrospect
2005, General Abrial became head of the French Air Defense headquarters, in Taverny and in 2006 Air Force Chief of Staff. Gen. Stephane Abrial received
COFAS is a hardened command centre for French nuclear forces at Taverny Air Base in Taverny Val d Oise. The alternate national command center is located
September 2005. From 2006 to 2008 he was appointed Air Defense and Air operations Commander in chief, at Taverny Paris and Lyon, France. He was promoted to