Hmm...

Last night in the Phoenix, AZ area, I saw a blinding white light when having a cig around 12:30 AM. Looked like a magnesium flare (ex mil, so I know)... a slow moving of the light and shadows... extremely slow movement... lasted about one second... I honestly could not see anything in the Northern sky due to being under a covered outdoor patio... I thought it was meteorite burning up during reentry... nothing about it on GLP, so I didn't bother to post.

What OP says he and others saw; I saw something similar last night. Slow movement of extreme bright light across the ground... lasted only a second... no sound.