2/3 Triangle craft flying low slow silent

After event I seen a show about "light beam craft" my jaw dropped because this is what I had seen it looked like the pointy end of a triangle V made of beams of hazy light with round brighter light going down the length of both sides craft was flying low and slow and also completly silent it was massive in size bigger than any jet depending on the actual altitude and perspective which I could not tell because nothing except the light was visible everything else was too dark to see