UFO intercepted by F-89 in Montana

Summary

In March 1959, a B-52 reported an object following it for fifteen minutes. An F-89J was scrambled to identify it. The object displayed red and green blinking lights and a steady white light, leading the pilot to suspect a delta or swept-wing design. The F-89 attempted to close in, but the object accelerated and climbed at higher speeds, disappearing from radar. Officials considered it possibly an unidentified aircraft, though no definitive explanations were found.