United States Marine Corps Forces, Pacific (MARFORPAC) conducted a proof of concept for operational employment of the T-AKE vessel in October 2012 during exercise Coconut Grove 12. Coconut Grove is a bi-lateral exercise conducted bi-annually with the MNDF. This was the inaugural exercise using a USMC Maritime Prepositioning Force (MPF) T-AKE vessel and the first step in showing operational usage of MPF in support of ground forces ashore. Coconut Grove 12 provided an opportunity to test T-AKE concepts, and to continue development of doctrine and tactics, techniques, and procedures for the USMC use of this class of ship in this role.