Huge triangular ship "glides" overhead and disappears to the North. Clear video obtained.

An extremely large triangular ship flew directly overhead. Size was comparable to a large military cargo carrier aircraft. There were three bright lights at each corner, but no structure was discernable between the lights due to the darkness. After watching it fly away, grabbed phone and managed to catch some video before it disappeared toward the mountains. Made no sound at all, even though if it was any kind of conventional aircraft, being so close it would have been heard.