Cpl. Brock W. English with the Offload Preparation Party ensures all parts are operational on the Assault Amphibious Vehicles aboard the Maritime Prepositioning Force ship, USNS Pililaau, Feb. 6. The OPP Marines conducted pre-operation checks on all of the vehicles aboard the ship. Their mission is to prepare and offload the equipment from ship to shore for use during Exercise Cobra Gold 2015. English is an AAV crewman with General Support Platoon, and a Lampasas, Texas, native. - Cpl. Brock W. English with the Offload Preparation Party ensures all parts are operational on the Assault Amphibious Vehicles aboard the Maritime Prepositioning Force ship, USNS Pililaau, Feb. 6. The OPP Marines conducted pre-operation checks on all of the vehicles aboard the ship. Their mission is to prepare and offload the equipment from ship to shore for use during Exercise Cobra Gold 2015. English is an AAV crewman with General Support Platoon, and a Lampasas, Texas, native.