In the opening scene, the Texas flags flying in the back of the pick up truck are flying "upside down".
The name of Bull's notebook is a play on words: "Bulls hit list"
In Chunk's notebook, Bull has written "BULLS HIT LIST" (only visible for a moment when he hangs up on Cable).
Callisto TX is nothing like West Texas because it isnt Texas. When you see Bull and his team arriving in Callisto, behind them is Proctor Drug, with a Pizza King around the corner. That Proctor Drug is located at 32 Gramatan Ave, Mt Vernon, NY.
Freddie Rodriguez' former costar on The Night Shift, Jill Flint, guest stars in this episode.