In December 2007, the 1st Cavalry Division relinquished control and Camp Taji was occupied by multiple brigade sized elements from a variety of units, until they were relieved by the 4th Infantry Division. The 621st Troop Support Command, Arkansas National Guard acted as the Garrison Command Cell (formerly known as the Mayor Cell) from October 2007 through March 2008 when it was relieved by 1–206th FA. Force protection duties were performed by a number of units, including elements of the California Army National Guard's 1–143rd FA. July 2007 also saw the arrival of 125 Air Force personal to support the Coalition Air Force Transition Team (CAFTT) that took a number of Iraqi warrant officers and trained them in every aspect of Air Combat Power to include training them how to troubleshoot, isolate and repair Huey gunship engines, fuel systems, and every thing associated with daily operations of a squadron of UH HUEY-1 gunships. During this time frame, elements of the 104th Division (USAR) were stationed at Taji as part of the Coalition Military Assistance Training Team (CMATT), providing military training advisors to the Iraqi Army Services and Support Institute (IASSI).