What method should be used to include additional information in the SF 91?

Using plain bond paper, titled, numbered, and dated to include additional information in the SF 91 is the correct method. This approach maintains the official nature of the documentation and ensures that all information is clearly presented and easily identifiable. By titling the paper appropriately, you designate the context of the additional information, while numbering and dating help organize the content and establish a timeline for when the information was added. This format is also conducive to maintaining a professional standard for military documentation.

In contrast, using an official document provided by the military may not provide the specific flexibility needed to add supplementary information relevant to the SF 91. Writing in pencil on the existing form could undermine the form's integrity and may not be acceptable for official records, which often require permanent ink. Typing the information in a separate email would likely fragment the documentation process, making it difficult to track all relevant details related to the original report. Thus, choosing plain bond paper effectively consolidates additional details in a manner consistent with military protocols.