Grayish metallic triangle shaped craft emits green aura over Texas.

On this summer day my brother, a friend and I were walking down the street.  I sensed something unusual and we began to run not even knowing why.  We hid behind an auto and watched this craft hover silently from the east to west. It was right over head and it hovered to a stop right above us.  It was in plain sight during broad daylight.  As it hovered above us, it started to glow, an aura around it. It was glowing a greenish color.  I also observed that it had what looked like a circle of red in its center like a neon light.  It remained still for about 1 minute then slowly curved toward the south and left.
Witness indicates that the date of the event is approximate.  PD