Some kind of evil looking airplane?

It was around 10 PM as Marathon restaurant was closing.  Living about a 1/4 mile from the restaurant I was entering a fence opening which served as a shortcut home.  When I looked back and up I saw a small white light high in the sky.  The light came down over the center of the street (a main street), as then I saw a black 20' long airplane.  Its wings were angled back, and on the backs of the wings were semi-circles.  Both wings had 4 or 5 semi-circles which communicated to me that it was evil.  The tail wings were ordinary airplane wings.  When it got about 20' over the middle of the street it sharply pulled up.  It then flew upward at an angle into outer space disappearing.  There was no sound.  No light was seen when it got close to the ground.