Yes I have seen that and it is very interesting. Bob Lazar comes across as very intelligent, as you would assume a scientist that is an employee of a top secret government agency would be. And he also comes across as very matter of fact, and down to earth.

Anyone who is interested should watch it, as he talks in detail about the alien technology that he has taken apart to figure out how it works. He gives specific information about where he worked in area 51 and also the procedures of security entries, that only those employees would know.

And he was sometimes sorry he brought the whole thing out because he had to retreat from everything.

It's very possible that a lot of our technology now came from or a version of alien technology.