The object looked like a triangle, 3 bright white lights were on the ends of the aircraft, it looked like it was heading to Scott AFB.

There was a triangle flying in the sky, roughly 1000 feet in the air, with 3 bright white spotlights on the underside, one on the front of the aircraft and 2 in the aft on the wingtips. The aircraft was flying at what looked like 100 miles per hour (160.9 kilometers per hour) to 150 miles per hour (241.4 kilometers per hour) The plane body itself was black. It looked like it was heading towards Scott Air Force Base. The plane was about 100 feet long (front to rear) and 50 to 70 feet wide. (Wing-tip to wing-tip) The planes were levelled off at what looked like 1200 feet after I first saw them. They left a white trail that slowly expanded over time.