The light the triangle shape no sound, even a hotair bollon make noise

I wood say the craft huvered 150FT off the ground, about 3 telephone poles hight.I was about 400FT from it!!! I wood say the craft was not longer than 30 FT, maybe only 25FT. color was dark like blueing on a gun. The light under the back was as wide as the hull's width, the light went around (or rapped up) the back of the hull (or transom),The light was as brite as (or glowed as) 100 colamen gas lantern. Not a sound as it fluw off slow, No wings No roters No bollons NO SOUND (NO SOUND) Yes it did have a aura or haze around it, almost an alumnation. It was flat on it's top and flat on it's bottom. But (one thing) the cockpit (glass) was much like a fighter jet from the late 50s. I know what I saw was real, But who made it? My background, I'm a nobody, just a guy liveing in Vt, a home lathe machinists. And I do beleave!!!!