Saucer shaped object near Sedona, AZ

My wife and I were on vacation in Scottsdale, AZ, and traveled to Sedona for the day.  We took many photos from our cell phones (16MB camera) when there.  A few days ago we copied the photos to our computer, and on the larger screen were able to notice what looks to us like a saucer shaped UFO above the mountain in the attached photo.  My wife took the photo.  Not knowing what she had photographed, I took the same view / photo within a minute later with my camera phone (both Samsung S5's), mine is stamped 3:30 pm (local time) and the object cannot be seen.  We are pretty certain there was not any debris on the camera lens, we’ve never had debris on any of our photos and have taken thousands.  
This is a recognizable mountain in the area, but I can’t tell you exactly where we were, or which way we were facing.  I really wish I had Geo-tagging turned on when the photo was taken!