During the war in Bosnia and Herzegovina, Bosnian Serb Air Force had conducted 17,316 sorties of all kinds, a large proportion of these being combat flights under the nose of NATO's Operation Deny Flight. However, it is important to note that 18 percent of all the sorties conducted between 27 May 1992 and December 1995 were medical evacuation flights, a total of 3.179 sorties. Over the war years, the Republika Srpska Air Force has lost 18 aircraft: five J-22 Oraos, six J- 21Jastrebs, five Gazelles and two Mi-8s as a result of enemy fire or accidents.