WASHINGTON - The state of the union is fretful. President Bush acknowledged the public's agitated state Tuesday night when he gave voice to growing concerns about the course of the nation he has led for five years. His credibility no longer the asset it once was, the president begged Americans' indulgence for another chance to fix things. There is no shortage: the Iraq war, global terrorism, a nuclear Iran, a stingy global economy, skyrocketing health care costs, troubled U.S. schools, rising fuel costs, looming budget deficits and government corruption. All received presidential attention Tuesday night. In his fifth State of...