Low flying silent craft with stealth coating.

At 1025 pm I pulled into the Walmart parking lot on Louis Ave Sioux Falls, A large chevron shaped craft was moving at a very low altitude (100ft to 150ft) approximately 300ft in front of me.
The craft was flying slow probably about 30 mph just clearing the top of Walmart, the craft was about the size of a couple city buses and moved with zero noise, the skin of the craft seamed to be coated in a light absorbing material and appeared as a black chevron moving against the back lit sky with a sort of shimmer around the edges, the craft itself had no visible light what so ever it seamed to absorb light, if it were not for the city lit sky you would never see or hear it, because of the city lights it appeared as a chevron shaped hole in space.
As it crossed the store heading north it banked east presumably to avoid a air plane that just took off from the air port on the north side of the city, by time I parked my car to get a better look it had moved into a darker part of the sky and was no longer visible against the back drop of the night sky.