 In 1994, the United States made a counteroffer to modernize 36 former US Marine Corps A-4M Skyhawks in a US$282 million deal that would be carried out by Lockheed Martin and included the privatization of the Fabrica Militar de Aviones (Military Aircraft Factory), which was renamed Lockheed Martin Aircraft Argentina SA afterward.In 2010, FMA reverted to the Argentine government as Fabrica Argentina de Aviones (FADEA).Argentine Air Force technicians chose 32 A-4M (built between 1970/1976) and 4 TA-4F airframes from the Aerospace Maintenance and Regeneration Center at Davis-Monthan Air Force Base in Tucson, Arizona to upgrade.