Triangle craft was caught moving at approximately 2000-3000 feet altitude from North to South direction at extreme speed. No lights visible - only slightly highlighted from the sun in the horizon from the West. The sun glint/highlighted areas on the craft were in the corners of the triangle and seemed rounded. It was just barely visible against the dark sky but the object was darker than the sky. Object made no sound there was a commercial airplane at higher altitude in same area and the plane could be heard and the triangle object seemed completely silent.