Which type of document provides guidance on Air Force procedures and policies?

Air Force Instructions (AFIs) serve as the primary source of guidance for Air Force procedures and policies. They are official publications that outline how to implement various policies and provide clear instructions on the regulations and processes that personnel must follow. AFIs cover a wide range of topics essential for the proper administration and operation of the Air Force, ensuring compliance with higher-level directives and laws while fostering uniformity across the service.

Other types of documents, while relevant to specific processes, do not hold the same authoritative guidance role as AFIs. For instance, Air Force Bulletins typically convey important information or updates, but they lack the comprehensive procedures outlined in AFIs. Deployment Guidance Manuals are focused on specific deployment operations and may not cover the breadth of policies required for all actions within the Air Force. Military Standards Directives provide standards for various military operations but do not serve as a broad procedural guide in the same way that AFIs do. This is why Air Force Instructions stand out as the correct answer in this context.