Art Mullen's pending retirement is based on the fact that the U.S. Marshals Service has a mandatory retirement age of 57. Nick Searcy turned 54 during the fourth season.
The colorful Truth family was based on an eccentric family from the documentary The Wild and Wonderful Whites of West Virginia (2009).
Professional MMA fighter, UFC/WEC Veteran "Cowboy" Donald Cerrone plays the fighter in the cowboy hat Randall fights in the back yard.
The second episode of the season was shot before the first, because of executive producer Michael Dinner's schedule and desire to be on set while the premiere was shot.