The gov has been reverse engineering UFO’s for decades; the gov has had their own UFO’s designed and built for decades:
“The site miraculously avoided regular bombing raids by Allied Forces during the Second World War, and 12 years later in 1945 the region was secured by US and UK troops.
US whistleblower Grusch claims it was around this time that the supposed craft was shipped back to the US; the first saucer recovery to his knowledge.
In 1933, a bell-like craft, around ten meters in size, was recovered in Magenta, northern Italy. It was kept by Mussolini's government until 1944 when it was recovered by agents of the Office of Strategic Services (OSS, a former US intelligence agency),' he told French newspaper Le Parisien last month.” <- OSS became CIA in 1947 after OSS imported SS Nazis into the US via Operation Paperclip.
Roberto Pinotti obtained evidence documents of the alleged June 13, 1933 crash in Northern Italy and a secret department set up by Mussolini to study the saucer.
www.dailymail.co.uk