I saw a bright, almost reflective, white object in the distance. Zoomed in becomes blurry. There's another object in a shadow in 2 pics

On Saturday, Feb. 11th at 11:50am, my plane was coming down over Phoenix, AZ from Las Vegas. As I was taking pictures out of the window of the plane, something oddly bright white in the distance caught my attention. I immediately zoomed in to see if this was a really white cloud or an airplane or something that I understood. I was only able to zoom in to a specific distance or the object completely blurred from view. I could see that it had edges. It appeared to have something that could be string-like pulling behind it. There are two pictures where there is something behind this object in a shadow. However, in one picture, the shadowy figure is to the bottom left of the white object. In the other picture, the shadowy figure is located at the bottom right of the white object. My photo shows our location as 33.441, -112.083