I saw a large disk object at about 2000 ft not visable with the eye with night vision googles in the back yard at about ten in the evening, i saw it for about 5 seconds then it dissapeared as if seing my infrared light source. no sound was heard and it was not seen afterward it did not produce any light and was very clear in in the eypeice. the way it cloaked was secuential in the direction of flight path and only took about a second. it looked reflective and rounded on the outside diamater of the disk and was not very thick in cross section and I would say it was bigger than a c-130 aircraft it looked smooth and uniform across its whole serface. the object moved slowly from north to south at a level flight from the ground it was about 2000 ft above me and 2000ft from me. It was such a clear sighting and so close i was shocked. I was looking from the east to the west I heard a noise in my back yard just as the craft cloaked like something small moving near my fenceline I looked tward the motion but saw nothing I felt an extreme fear grip me and imediately went in the house. I went back out after about 5 minutes and scanned the whole sky and saw nothing.