In 1946, over two thousand UFOs were observed flying above Scandinavia. They looked like missiles with a flame exhaust at one end, but traveled at varying speeds (from very fast to fairly slow) and performed various exotic manoeuvres at these speeds. There were reports at the time that some had landed and exploded. Neither East nor West admitted launching these rockets. Western scientists analyzed fragments from these missiles and said that they were made of an organic substance that resembled carbide. When a Greek investigation publicly announced in 1967 that these were not missiles, the investigation was ordered to close by the Army and further information was covered in a blanket of secrecy.