When first introduced to Thor Gunderson, he has very dark, almost black, hair. This is consistent with the early war scenes in season 5 where he has black hair. When impersonating Bishop Dutson, Thor's hair and beard are salt and pepper. Once in the employ of Brigham Young, his hair changes color to a brown or light brown and remains so into season 5. Since men did not color their hair in those days, this is a serious continuity issue for the character of Thor Gunderson. Logically his hair would have remained black through his Dutson days, through season 4, finally becoming salt and pepper in season 5, as a matter of his advancing age.
When Naomi fires the rifle at Tor she does not chamber the second round. She just pulls the hammer back'
Camp Douglas is portrayed as being out in the desert, away from civilization. In reality, it is/was three miles east of Salt Lake City.