Although F-16As of the Pakistan Air Force (PAF) did not see combat in the 1999 Kargil War, they were initially employed in patrolling the border to ensure Indian Air Force (IAF) fighters did not cross the line of control. Later in the war, lack of spare parts due to sanctions imposed on Pakistan forced the PAF to withdraw its F-16 fleet from regular patrol duties. The PAF's main opposition was the MiG-29, used by the IAF to provide fighter escort for Mirage 2000s which were attacking enemy targets with precision guided munitions. According to Indian sources, IAF MiG-29s of 47 (Black Archers) Squadron tracked two PAF F-16As close to Indian air space with their radars, The MiG-29's with long-range BVR's were able to Lock the Pakistani F-16's while the Pakistani F-16s lacked BVR capability. However Indian Mig-29's decided not to attack as they were ordered because no official declaration of war had been issued. Pakistani sources state that the number of border violations by Indian aircraft dropped noticeably when F-16s were on patrol and that there were several cases of PAF F-16s and IAF Mirage 2000s tracking each other with their radars, but again no combat took place.