 The 5th Marine Regiment designated 2 / 9 to participate in the Marine Expeditionary Unit deployment cycle during November 1991 . With the successful culmination of the Special Operations <unk> Exercise ( <unk> ) , 2nd Battalion , 9th Marines became the designated Battalion Landing Team ( <unk> ) for the 15th Marine Expeditionary Unit ( 15th <unk> ) . 
