A strange black UFO above Salt Lake City, Utah

On May 6, 2014, a witness has taken several pics of the sky when he has seen a strange object that popped in and out of view very quick.

This dark UFO, that is appeared above Salt Lake City (in the State of Utah) had an indeterminate shape.

Witness statement:

I was taking pictures of the sky outside of my house when I looked at the pictures the object was only in one of the pictures nothing before nothing after don't know what the object could be but it was very strange.