Which NOTAM category includes cross-references related to other NOTAMs?

Pointer NOTAMs serve a specific purpose in the NOTAM system, which is to reference other NOTAMs. They highlight and direct users to relevant information found in other NOTAMs, making them a vital tool in ensuring that pilots and operators are aware of critical updates or changes affecting their operations. Since Pointer NOTAMs specifically point to other NOTAMs, they effectively categorize information regarding those related NOTAMs.

In contrast, Military NOTAMs focus on different operational parameters relevant to military activities, while FDC NOTAMs contain information regarding changes that are essential for aviation safety, such as changes in procedures or regulations. D NOTAMs pertain mainly to information concerning airports and air navigation facilities. Therefore, Pointer NOTAMs stand out for their unique role in cross-referencing, which is why this category is the correct answer.