Other mistake: When Deputy Dwayne is talking to Sheriff Miguel Acosta while Acosta pours himself a cup of coffee, he picks up the coffee jug, pours his coffee and puts the coffee jug back far more quickly than is humanly possible.
This Land Is Your Land - S3-E13
Other mistake: When Nick is talking to Troy about saving the people on the ranch from the herd, Frank Dillane's British accent slips through. He says "if they do die, it's not because they were too good for this world it's because we failed."