What message key is used to access the LESC?

The message key used to access the Law Enforcement Support Center (LESC) is indeed the IAQ key. This key is specifically designated for inquiries regarding the status of stolen vehicles and to verify the identity of individuals, particularly when it comes to accessing pertinent information related to existing records in the NCIC system.

Using the IAQ key allows law enforcement personnel to submit queries for confirmation of hits related to stolen property or warrants, enhancing communication and facilitating timely responses. The function of this key underlines the importance of quick access to critical data in law enforcement operations, especially in emergency situations where timely decision-making is essential.

In contrast, the other options represent different purposes or message types not directly tied to access the LESC. For example, QRI is related to querying for information in general, while NICS pertains to the National Instant Criminal Background Check System, serving a different function than what is provided by the IAQ key for LESC access. The LESC itself as an option denotes the center rather than the key used to access it.