I agree with the permission to a police officer. I am a police officer and have permission to hunt a tract of land owned by some people from out of state. They don't want anyone on thier land. Well one day I caught a group of people driving it, and asked if they had permission, they said yeah but couldn't give me a name of the landowner. I told them I was a police officer and had exclusive permission to be there, and the landowner didn't allow anyone there, asked them to leave and not return unless permission was given to them. No further problems.