A Marine with Combat Logistics Regiment 25 drives a High Mobility Multipurpose Wheeled Vehicle and trailer off of a Roll-on/Roll-off Discharge Facility and onto an Improved Navy Lighterage System during an in-stream Marine Prepositioning Force Exercise off the coast of Marine Corps Support Facility Blount Island, Florida, Aug. 19, 2015. Marines with CLR-25 and sailors with Naval Beach Group 2 joined forces for the latest iteration of MPFEX, which saw service members offloading the USNS 1st Lt. Jack Lummus using Lift-on/Lift-Off and Roll-on/Roll-off procedures. - A Marine with Combat Logistics Regiment 25 drives a High Mobility Multipurpose Wheeled Vehicle and trailer off of a Roll-on/Roll-off Discharge Facility and onto an Improved Navy Lighterage System during an in-stream Marine Prepositioning Force Exercise off the coast of Marine Corps Support Facility Blount Island, Florida, Aug. 19, 2015. Marines with CLR-25 and sailors with Naval Beach Group 2 joined forces for the latest iteration of MPFEX, which saw service members offloading the USNS 1st Lt. Jack Lummus using Lift-on/Lift-Off and Roll-on/Roll-off procedures.