I was going out to our shop building because I saw the lights in the back of the building had been left on. As I was walking to the shop I heard a low rumble and expected to see an aircraft approaching. Instead I saw a large black triangle object I could not identify directly over head. I am a commercial pilot so I think I could identify most aircraft. This was large triangle shape object and had bright white lights at each of the 3 corners. in the center was a pulsing red/white light. No red/green indicator lights as on normal aircraft. The craft was extreme black against a star lit night. At first I thought it was about 2000 ft agl, but I can’t be sure because the sound trailed the object by a short distance. As I watched the object head due north from my position I saw what looked like something descend from the vehicle at a fixed distance. I thought at that time maybe it was a military fueling aircraft and a drogue line was deployed. it had the pulsing red/white light on it. However, as it continued north from my location, that object rotated around and above the main object as it pasted over the horizon from my view.
Black Triangle Sighting in Keota, Oklahoma on May 27th 2015 – Large Triangle white lights at each corner center pulsing red/white light