Grant him a revocable license to have the fence on your property so that he cannot claim adverse possession and then it’s no problem because you can revoke the license at any time but you will have to have the property surveyed when the time comes to the
license to prove property lines.
No. The female cop is more likely to shoot the male cops than the criminal, and the criminal already had his back to the cops and was running away when the two male cops had a chance to shoot. Cops cannot shoot a criminal in the back as he/she runs away unless the criminal poses a clear threat to others.