Before you blow up (and obviously manipulate in Photoshop) this image it looks like a cloud.

That this image has had color change done, and a contrast enhancement which brightens the bright spots making them look more like reflections off a metallic surface. A clear indication of manipulation, and as soon as you manipulate it you can be pretty certain you have also invalidated it. Yet even here it looks pretty exactly like a lenticular cloud.

Lenticular clouds (Altocumulus lenticularis) are stationary lens-shaped clouds that form in the troposphere, normally in perpendicular alignment to the wind direction. Lenticular clouds can be separated into altocumulus standing lenticularis (ACSL), stratocumulus standing lenticular (SCSL), and cirrocumulus standing lenticular (CCSL). Due to their shape, they have been offered as an explanation for some Unidentified Flying Object (UFO) sightings.

But I could be wrong, let’s just wait and see if any other reports of giant UFO’s come in from Arizona. This object was reported sighted on the north side of Scottsdale, and the Scottsdale Municipal Airport is also located there. An object this large does not go unnoticed by the myriad small planes, police and news helicopters, kids flying kites, bird watchers or just average people, not so well trained in observation as those, who happen randomly to be looking generally… up.