The Vatican's Response to UFOs

The claim is that in 1933, a UFO crashed in Italy and Mussolini got a hold of it. According to various accounts, he also told Pope Pius the 11th about it. There are claims it may have influenced Italian aircraft design of the time. But then according to Grusch's version of the story, at the end of the war, Pope Pius 12th let's American forces know about this and we are able to scoop it up.