UFO Sighting in Gretna, Nebraska on 2017-01-09 22:46:00 – White ball of light traveling at extreme speeds (approx 10x normal jet liner) changed direction then slowed then disappeared.

White ball of light traveling westbound at extreme speeds (approx. 10x normal jet liner) changed direction south then slowed and disappeared. seen while driving stopped and watched event took notice of object after seeing it cover approx. 5 miles within a couple seconds at an altitude of approx. 30k ft. object was spherical and approx. 40ft in diameter. very bright. no sound.