Shortly after returning from work here in Italy, 4 aircraft mechanics witnessed a triangle craft or 3 separate crafts fly over our hotel at 12:51 AM the triangle was transparent as we could see stars from the big dipper through the triangle shape. the triangle passed over the hotel and through the big dipper heading north in a straight line, then it banked to the left and shot out of sight heading in a north west direction, we observed this triangle for approximately 10 seconds. my account is that it is 3 separate lights that make up the triangle, but they fly as if they are one object. having been in the airforce for 15 years, I have never seen anything plane that could fly like or resemble this shape.