I've read many claims about Bob lazar in the past 7 or 8 years regarding his involvement in Area 51. He was employed there years ago and claims he  has aided officials on reverse engineering the alien vehicles.

Although I've seen many videos about him, I've never seen this video which he made. He explains in detail how the spaceships work and where they get their power source.

Many of the explanations in this video were not new to me, but there was some material that was unfamiliar, and very interesting.