radar with 15 km detection range. 24 units in service. Supporting third party organisations The Swiss Air Force supports third party organisations with equipment and staff. It provides the civilian radar Skyguide with FLORAKO radardata enabling safe air traffic management. Air Force helicopters and drones regularly conduct surveillance flights for the Border Guard Corps GWK, for general surveillance at major events and search flights (SAR) for national police and Rega (air rescue). The Fire Department also uses its drones and helicopters with FLIR to locate forestfires and to extinguish them with Bambibuckets. 3 helicopters supported Swisscoy in the KFOR, some supported in large-scale events for relief abroad (e.g. Sumatra after the tsunami). The Air Force supports the Federal Office of Public Health, National Emergency Operations Centre and conducts regular ENSI flights collecting airquality data and radioactivity measurements; it also does parabolic F-5 flights as part of the ARES program of the ETH Zurich and other research institutions. The Air Force also modified all diplomatic flights outside the opening times of the FOCA and represents the REGA (Swiss Air Rescue) communication systems. The Swiss Air Force operates the Rescue Coordination Center "RCC Zurich" on behalf of the FOCA at the Dübendorf Air Base. The future Planned acquisitions and projects in progress FLORAKO upgrading: In 2017 Armasuisse and RUAG confirmed the contract with Thales for the upgrading of the Master A and M type radars in the FLORAKO system. ADS15: As part of the Armament Program 2015, six Elbit Hermes 900 will replace the remaining 15 RUAG Ranger ADS-95s that are still in service by 2019. Transport aircraft: In 2015, Minister of Defence Ueli Maurer gave assurances that a transport aircraft purchase was planned by 2018. BODLUV2020: The three anti-aircraft systems (Oerlikon 35 mm twin cannon FIM-92 Stinger and Rapier missile) should be replaced by 2020 by two systems which will have their command and control connected to the FLORAKO System. 24h/365 QRA15: by 2020 the Swiss Air Force intends to have a round-the-clock 15 minutes Quick Reaction Alert capability (15 minutes from an alert to fighters becoming airborne) with fully armed F/A-18 fighter jets, based at Militärflugplatz Emmen and at Payerne Air Base (the main base for QRA operations); During this time, the presence of F/A-18s will be steadily increased to full strength at permanent readiness. F/A-18 replacement: In June 2021, it was announced that the Lockheed F-35A had been chosen