When Hank enters the subway car on the platform at the station it is one car but when it exits the tunnel it becomes another subway car.
After the diamond heist, the limo's windshield changes back and forth on the amount of damage done to it.
You can clearly see a wire pulling Lou Diamond Phillips off a horse as he is hit by a henchman at the barn.
The movie is said to take place in Philadelphia but must have been filmed at least in part in Canada as you can distinctly see a "Loblaw's Market" in the background of one scene. Loblaw's is a Canadian chain.
When Hank is explaining the battle concerning the lance to the Lakota kids at the end, he says "calvary" when he means "cavalry".