 F-16s returned to Iraq in December 1998 as part of the Operation Desert Fox bombing campaign to "degrade" Iraq's ability to manufacture and use weapons of mass destruction.F-16s were also employed by NATO during Bosnian peacekeeping operations in 1994–95 in ground-attack missions and enforcing the no-fly-zone over Bosnia (Operation Deny Flight).The first incident took place on 28 February 1994, four J-21 and two IJ-21 "Jastrebs", and two J-22 "Oraos" had violated the no-fly-zone to conduct a bombing run on Novi Travnik.