Demitri tells Janis that Sheriff Keegan was killed "five minutes" after mentioning that she had no vision. She said it in bright sunlight, and died well after dark.
The U.S. Bank Tower in downtown Los Angeles is seen to have a huge gash near the top in one shot, but another shot a bit earlier shows the building intact.
Janis says that to further enhance the image in the video they would have to use the supercomputers at Langley. That would not be necessary. The enhancement process is not magic and the pixels are so large that there is nothing to be gained by super fast processing. A skilled photoeditor on a pro level computer and off-the-shelf software would be able to do just as good a job.
Fumbling Bumbling Idiots (FBI): Agents Benford and Noh have a tactical team at the bus station, part of what the Sheriff described as a small army from the Provo field office. Yet when they go into the abandoned building, they only use the Sheriff for backup. Additionally, standard procedure involves setting a perimeter around the building so suspect(s) inside could not get away as took place here.