Nellis AFB And UFOs

What are these things? And why are there no closer up videos or other people making videos?
Still I'm 99% sure it's not a hoax. Can't think of anything earthly that would be doing this.

If I was this guy I would plant cameras everywhere near that airbase, just to find out what's going on.

We need a daylight picture from the same spot so we can see
if anything is in the background at that height.
It could be lights on a mountain,very strange indeed.

I also considered the lights being on a mountain in the background.
But the way they move is not like traffic, helicopters, or drones. There are too many.

Found a different video in which the mountains are visible. You can clearly see it is above and not on the ground.

Reminds me Phoenix lights of Thursday, March 13, 1997.
However seems like more advanced vehicle performing.
Boron and copper metals burn green when oxdized(burnt), boron was used for Pratt & Whitney J58 (ramjet) in fuel addition. The bluewhite shiny one looks like hydrogen burning (similar to space shuttle engine).
However whole engine could burn also H2, but due problems with hydrogen stability and leaking out trough metal crystaline surface, it was not used for sr-71. But today, with nanotechnology, along official sources we can store even hydrogen for longer period. 
https://www.extremetech.com/extreme/263245-new-material-efficiently-generates-hydrogen-water It describes stuff for fuel cell, official source, darpa can have it like 10 years already. They does not need fuel cell to be fed from such storage, it can be also a scramjet engine or just turbo-ramjet like J58 mouted into new, type of arrowhead shaped vehicle, which on this video just tests a liftoff.
https://en.wikipedia.org/wiki/Boeing_X-51_Waverider

I realise it could be some advanced technology being tested. But then what are they doing? It looks so random. It does not look like a testflight or anything recognizable. Also doesn't look like a aircraft dropping flares.