What programming aspect performs a check of NCIC person files?

The programming aspect that performs a check of NCIC (National Crime Information Center) person files is the QWI message key.

This component is specifically designed to interact with the NCIC databases to retrieve relevant information about individuals, thus enabling law enforcement to access vital data quickly and efficiently. Through the QWI message key, agencies can initiate queries that verify identity and check for any criminal history or outstanding warrants associated with a person. This is crucial for maintaining public safety and for the operational efficiency of law enforcement agencies.

While the other options refer to different functionalities within systems used in law enforcement, they do not specifically relate to the querying of NCIC person files. The III QH transaction, for instance, pertains to the Interstate Identification Index but is distinct from the direct queries made with the QWI message key. The TBI system analysis and Audit recording system focus on broader analytical and monitoring functions rather than the specific task of checking NCIC person files.