That appears to be the only explanation for this image caught on Google Maps:

Weird, no?

Call me naive, but what would a cruise missile be doing in the sky over Utah?  Especially so close to a town.  Just to the south east is Circleville, home of Butch Cassidy, and U.S. Highway 89. 

I know we test missiles, but flying them over populated areas?

I didn’t think that was happening.