the new Soviet Bison bomber in the spring of 1954 had been followed
by reported sightings of more than 30 of these bombers in the spring
and summer of 1955 (in reality these were sightings of the same
group of l 0 aircraft that circled around out of sight and made several
passes during a Soviet air show).
We were told by a former air attaché in 1968 that the precise number of Bison was known as they were manufactured at an airfield in Moscow and flown out. They could be seen from the embassy (he said) and as the aircraft could not land back it was a simple matter to count them.