What file allows users to find the ORI of an NLETS user agency?

The correct answer is the ORION File. This file is specifically designed to provide users with the ability to access and find the Originating Agency Identifier (ORI) of any NLETS (National Law Enforcement Telecommunications System) user agency. The ORI is crucial for identifying agencies within the various databases and systems that law enforcement may need to access.

In a practical context, when law enforcement personnel are trying to obtain information or interact with other agencies through NLETS, knowing the specific ORI of those user agencies is necessary to ensure proper communication and data sharing. The ORION File facilitates this lookup process efficiently.

The NLETS File, while related, does not specifically focus on the ORIs, as it houses other operational information relevant to the network. The CJIS File pertains to the Criminal Justice Information Services, which may include a variety of law enforcement records and data but is not aimed at facilitating the lookup of ORIs specifically. Similarly, the FBI File comprises detailed files maintained by the FBI and does not serve the purpose of identifying NLETS user agency ORIs.