; or (B) an offense involving a child under a State or Tribal statute that is similar to a provision described in subparagraph (A). (4) Known to law enforcement The term known to law enforcement means that a Federal, State, Tribal, or local law enforcement agency has evidence of a crime that can be attributed to a person or location, including an email address, Internet Protocol address, screen name, universally unique identifier, phone number, or other information attributable to that person or location. (5) Law enforcement agency The term law enforcement agency means an agency of the Federal Government, a State, a political subdivision of a State, or a federally recognized tribe that is authorized by law to supervise the prevention, detection, investigation, or prosecution of any violation of criminal law. (6) NCMEC The term NCMEC means the National Center for Missing & Exploited Children. (7) Proactive policing The term proactive policing means a covert or undercover investigation conducted by a law enforcement agency that involves a person or organization that the law enforcement agency believes is engaging or has engaged in an offense or violation relating to child sexual abuse, child sexual abuse material, child exploitation, or child sex trafficking crimes. (8) State The term State means each of the several States, the District of Columbia, the Commonwealth of Puerto Rico, or any other territory or possession of the United States. (9) Victim-centric The term victim-centric refers to the systematic focus on the needs and concerns of a victim to ensure that services are delivered in a compassionate, sensitive, non-judgmental, and culturally considerate manner that seeks to minimize retraumatization associated with the criminal justice process by providing the support of victim advocates and service providers, empowering victims as engaged participants in the process, and providing victims an opportunity to play a role in seeing their abusers brought to justice. (10) United States The term United States means