Triangular-shaped UFO over Temple Square, Utah

On July 29, 2017, a man has captured a picture of a triangular-shaped UFO flying over Temple Square, a complex owned by The Church of Jesus Christ of Latter-day Saints, in Salt Lake City, Utah.

Eyewitness statement:

Yesterday after I got off of work, I walked over to Temple Square to try and recreate an image I captured last year. It was around 3:30pm. I snapped a good 50 images and then went home. This morning I decided to look at which ones actually worked and after selecting a couple of favorites, I started to edit a little in LR. Since there was some dust on the lens and because I had closed the aperture to about f/22 there were a few dark dots on the image so I zoomed in to remove them. Upon doing so I noticed an anomalous object in the background. Since the object wasn't in any of the other images, including the one I took less than 1 second before and the following one I took around 3 seconds later, I can officially call this an Unidentified Flying Object. This image was captured at 3:33:32pm. It could be a drone, but it doesn't really look like one to me.
What do you think?