On Tuesday 21st May Lake Bolsena, in the centre of Italy, has returned a part of an American airplane that had disappeared in Bolsena waters during the Second World War. It is a B-17F’s ventral turret with its two machine guns. The wreckage had been located in 2011 by Massimiliano Bellacima, a skin diver from a Bolsena school, at 90-meter depth. In that period, thanks to underwater images, a writing o...