Buenos Aires, Dec 31 (IANS) Argentina's Air Force has said it has received many reports of sightings by pilots and radar of unidentified flying objects (UFOs) that are a 'potential threat to national air security'. The Air Force said often combat planes have reported following strange objects in the skies above Argentina. Even the local media have reported that dozens of photos reach their offices regarding alleged UFOs, often confused with planes or birds in flight and, in some cases, trick photographs. The Air Force press office said the country's military unit will set up a multi-disciplinary commission to investigate such UFO sightings, Prensa Latina reported. The commission will be made up of specialists from the meteorological service, pilots, astronomers, doctors and radar and land experts.