most active participant in the modernisation of Air Force airfields. Airfields in Gala and the Nasosnaya Air Base near Haji Zeynalabidin settlement have been modernised with US support as part of the Azerbaijan-NATO Individual Partnership Action Plan. Special equipment were installed there to provide flight security. The starting command points, engineering control systems and engineering air force service were provided with new buildings. Negotiations over the modernisation of Kurdamir airfield are currently under way. An advanced Flight Control System has been installed at Dollyar Air Base with support from the United States. Since September 2008, Turkey has helped to modernise the Air Force central command headquarters. According to a Turkish-Azerbaijani agreement, a NATO standard central command management center will be installed there. A great number of projects such as joint manufacture of unmanned aircraft will be implemented with Turkey in the near future. The Gabala OTH Radar was operated by the Russian Space Forces. The radar station had a range of up to 6,000 kilometres (3,728 mi), and was designed to detect missile launches as far as from the Indian Ocean. It is not known whether Russia shared any of the radar's data with Azerbaijan. The equipment was dismantled and sent back to Russia after 2012. In 2006, the US provided Azerbaijani military with additional radar installations. Plans were announced for the US to modernize one radar station near the Iranian border at Lerik and another near the border with Georgia at Agstafa. Joint work also commenced on two radar stations on the Russia-Azerbaijani border and Iran-Azerbaijani border to monitor Caspian Sea traffic. Equipment Aircraft The MiG-29 has been designated as the standard aircraft for the AzAF. In September–October 2010, Azerbaijan purchased 24 Mi-35M from Rostvertol. 8 of them have been delivered in the end of the first quarter of 2012 and four more in August 2012. With the arrival of the MiG-29s, the Air Force appears to have retired the MiG-25 aircraft that it used to fly from Nasosnaya Air Base. IISS estimates in 2007 reported 26 as still in service; other figures previously placed the total as high as 38. The Air Force retains in store and L-39 fighter training aircraft produced in the Czech Republic and Ukraine. Azerbaijan also manufactures Israeli-designed spy planes. Among the licensed UAVs is the Orbiter-2M and the Aerostar. Both are manufactured at the government-owned Azad Systems Company plant near Baku. The head