Original sentence: Comparison of the video taken of the lights (which appeared at night) against daytime images of the same scene show that the lights "disappear" at the exact moment they are shown to fall behind a mountain range.Some lights drifted as low as 1000 feet and moved far too slowly and silently for conventional aircraft.The mountains were invisible against the night sky.The were also no reported radar sightings of the objects which is consistant with the flare theory
Edited sentence: Also analysis of the video shows the spectral composition of the light from the UFO's exactly matches that of the military flares.Comparison of the video taken of the lights against daytime images of the same scene show that the lights "disappear" at the exact moment they are shown to fall behind a mountain range which was invisible against the night sky.Some lights appeared to drift as low as 1000 feet and moved far too slowly and silently for conventional aircraft.The Phoenix lights have since been proven beyond doubt to have been caused by the military signal flares.The were also no radar sightings of the objects which is consistant with the flare theory.There are no pictures of the triangular craft.Without exception however, the video and pictures show only the lights