flyers issued by another police department. In Illinois v. Wardlow (2000), a person's unprovoked flight from Chicago police officers in "an area known for heavy narcotics trafficking" constituted reasonable suspicion to stop him. Usually during a Terry stop, the police ask those they detain to identify themselves. Several states require people to provide their names to the police. In Hiibel v. Sixth Judicial District Court of Nevada (2004), these stop and identify statutes were deemed constitutional. While the specifics of "stop and identify" statutes and ordinances vary, a significant number of states and local jurisdictions have "stop and identify" statutes. In New York, Courts have limited the effects of Terry by creating a four level continuum of intrusion each of which requires its own level of suspicion. This allows police officers who encounter individuals on the street to approach an individual with as little as an articulable and objective credible reason. In People v. DeBour, New York's highest Court permitted the police to stop an individual for crossing the street when the individual observed the police. Lacking reasonable suspicion, police may stop a person based on a hunch, constituting a "consensual" stop. United States v. Mendenhall found that police are not generally required to advise an individual that they were stopped on a consensual basis and that they may leave at any time. A person can typically determine if a stop is consensual by asking, "Am I free to go?". If the officer responds in the negative or does not respond, the person is being detained under a Terry stop; otherwise the person may leave. Mendenhall also found that a consensual stop can be converted into an unconstitutional Terry stop by circumstances such as "the threatening presence of several officers, the display of a weapon by an officer, some physical touching of the person of the citizen, or the use of language or tone of voice indicating that compliance with the officer's request might be compelled". Police who conduct an unconstitutional Terry stop can face administrative discipline and a civil suit. In Pennsylvania v. Mimms, two police officers gave Mimms a ticket for driving a car with expired car tags. When they asked him to step out, they realized that he had a gun, and promptly arrested him. The Court ruled in favor of the police, citing officer safety as their reasoning. Dissenting justices found that this furthers the expansion