The Royal Netherlands Air Force deployed 12 F-16s as part of Operation Deny Flight, NATO's enforcement of the Bosnian no-fly zone between April 1993 and December 1995 . The Royal Netherlands Air Force also deployed 18 F-16s as part of Operation Deliberate Force, a NATO air campaign conducted to undermine the military capability of Bosnian Serbs who threatened or attacked UN-designated "safe areas" in Bosnia .