Which organization assigns COMMSEC incident report case numbers?

The correct answer highlights that the Air Force Communications Agency is responsible for assigning COMMSEC incident report case numbers. This organization plays a pivotal role in managing communications security (COMMSEC) within the Air Force, including logging and tracking security incidents related to communications systems. By creating a systematic way to assign case numbers, the agency ensures a consistent approach to handling security incidents and facilitates effective reporting, documentation, and follow-up.

In contrast, the other options are associated with different functions or responsibilities. The Air Force Office of Record primarily deals with the archiving and maintenance of official records but does not handle COMMSEC incident reports specifically. The Central Office of Records is not directly involved in COMMSEC matters and typically pertains to overarching record management functions. The National Security Agency focuses on national security and intelligence but does not assign case numbers for Air Force-specific COMMSEC incidents. Thus, the Air Force Communications Agency is the most relevant organization for this function.