My dogs had to go out and I happened to look up at the sky from my doorway and spotted a light that made quick erratic movements that no aircraft I know of could make. It was a bright whitish blue light. After its zig zag motions, it quickly shot out of sight in an easterly direction and within seconds it reappeared to the original spot in which I noticed it when letting my dogs out. Again moving in the same manner as prior but much faster when it returned. That is when I decided it was time to head back inside. Fear got the best of me at almost 3am in the morning.