Based on the 1997’s sightning of 7 Lights in a V-Shape formation in Nevada, United States.
It is up to debate as to what it really was, but recently, in the Space Engine Forum (http://forum.spaceengine.org/viewtopic.php?f=11&t=634) a more grounded possibility has been proposed.
-A gigantic blimp, over a mile long, with some lights to determine its possition, as testing would be done at night, and electric/chemical hybrid engines for propulsion, built in secrecy by the US military.
So, with that in mind, and using visual keys from JP Aerospace’s air-to-orbit blimp design, I modeled this specific version of the aircraft that could explain the phenomenon.
Sure, you could say this is dumb. The size, the propulsion method. The whole Idea of building something this big. But hey, at least it ain’t space travelers from another galaxy, and its easier to say “It was Aliens” to the public, than “It was an Secret Experimental Aircraft”
-3D model of the blimp made by me
-Terrain Data (Piestewa Peak) from Google Maps