 During this time, the billet of MAU Commanding Officer alternated between Regimental and Aircraft Group Commanders who filled the billet in six-month increments as a secondary duty during their tenures in command.In 1983, the Marine Corps directed a change that resulted in the first renaming of the 17th MAU.The decision was made to "source" the continuously deployed Western Pacific (WESTPAC) MAUs from I Marine Amphibious Force units in Southern California.