In a conventional TM numbering system, how is a classified supplement generally identified?

In a conventional TM (Technical Manual) numbering system, classified supplements are typically identified by a suffix letter that indicates their classified status. The designation using the letter "A" serves to clarify that the supplement contains additional or modified information pertinent to the original unclassified manual while ensuring that users are aware of the classified nature of the content. This system helps personnel quickly recognize the sensitivity level of the information and adhere to security protocols when handling such documents.

Choosing the correct suffix is critical for maintaining compliance with regulations regarding the handling and distribution of classified materials, which all personnel must prioritize to safeguard operational security and sensitive information.