Sitting on a deck viewing the ocean in Buxton NC with girlfriend. Saw a brilliant light overhead, moved to the NE at high rate of speed, and vanished on horizon. 5 minutes later, appered at zenith, moving south, appeared to rapidly accelerate straight up and vanish. 2-3 minutes later, it appeared over the ocean moving SE, for about 3-4 seconds and abruptly vanished.Chrystal clear night, before the moon rose. very clear. Was the brightest object in the sky, with the next brightest object being Mars. No strobing, blinking or sound presented.