On Friday evening I was in my backyard testing a new camera when I noticed this aircraft flying above the house. What made this one different from the many aircraft fly-overs? I heard no engine sounds, especially when the craft was directly overhead. In this video I made a few comparisons to aircraft both at the same altitude and higher and a helicopter that leaving the airport a few miles away. I shot video of a similar object back in September http://www.youtube.com/watch?v=yE368A…