This is Caleb’s reading of official Air Force material; however, this specific recording/audible version of the “Purple Book” is not affiliated with the United States Air Force…just one Airman’s initiative to help others. Air Force Foundational Documents: https://www.airuniversity.af.edu/Foundational-Resources/ The Blue Book: https://www.doctrine.af.mil/Portals/61/documents/Airman_Development/PurpleBook.pdf Subscribe and follow me for more great & FREE content here:  https://calebvaden.wordpress.com/ Or here: https://linktr.ee/calebvaden


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