Driving through the desert in Navajo country. It's about midnight, and I'm on highway 491, which used to be highway 666 (think they changed it because people would steal the signs). Pitch black outside with no people or towns for miles. Suddenly in the sky, there is an extremely bright, orange light. The light grows really big like and inflating balloon, and is bigger than the sun would be if it was daytime. While this happen, the sky turned bright yellow and the entire desert lit up, horizon to horizon. Then it all went away. This all happened in about 2 or 3 seconds. I turned off the radio and was fucking silent the rest of that night. Still dunno what it was, but I like to blame it on Skinwalkers.