Two U.S. Air Force F-16 Fighting Falcons fly in support of NATO Operation Allied Force. Two U.S. Air Force F-16 Fighting Falcons fly in formation during a mission in support of NATO Operation Allied Force on April 20, 1999. Operation Allied Force is the air operation against targets in the Federal Republic of Yugoslavia. The F-16's are from the 510th Fighter Squadron, Aviano Air Base, Italy, and are carrying a full air-to-air combat load to include AIM-120 Advanced Medium-Range Air-to-Air Missiles, drop tanks and an electronic jamming pod. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 645975-E-HTA23-934.jpg Photo Gallery