Red object changing color in Pennsylvania

Summary

A witness in Clearfield, Pennsylvania, observed a luminous object that changed color between red and white, similar in size to a star. The phenomenon appeared half a mile from the observation post and remained visible for two hours before disappearing into the fog. Despite the clear sky with no clouds, the object seemed to move up and down, always staying in the eastern direction. Two aircraft passed near the object at different times, but were not picked up on radar. The initial reports are contradictory, making any analysis or evaluation impossible.