"Memorandum for the Joint Force"(PDF). The United States Joint Chiefs of Staff. January 12, 2021. Archived(PDF) from the original on March 18, 2021. Retrieved September 17, 2021.
"Memorandum for the Joint Force"(PDF). The United States Joint Chiefs of Staff. January 12, 2021. Archived(PDF) from the original on March 18, 2021. Retrieved September 17, 2021.