A tense standoff between Roane County deputies and a man Saturday night ended with one officer assaulted. Authorities responded to a home on the 200 block of Paint Rock Creek Road where 28-year-old James Tyler Lockhart barricaded himself in a bedroom for two hours. Lockhart apparently made numerous threats to law enforcement, saying he was ready to die and he would take them with him. One officer went into the room and was hit by Lockhart with an object. Other deputies came in and restrained Lockhart who was charged with assault of a law enforcement officer and simple possession of drugs.