U.S. Marines assigned to II Marine Expeditionary Force board the Spearhead-class expeditionary fast transport USNS Trenton (T-EPF 5) in Ljubljana, Slovenia, Nov. 16, 2022. Marines assigned to II MEF, based out of Camp Lejeune, North Carolina, embarked aboard USNS Trenton to improve interoperability while refining the U.S. capability to rapidly deploy forces aboard U.S. Navy expeditionary fast transport vessels. - U.S. Marines assigned to II Marine Expeditionary Force board the Spearhead-class expeditionary fast transport USNS Trenton (T-EPF 5) in Ljubljana, Slovenia, Nov. 16, 2022. Marines assigned to II MEF, based out of Camp Lejeune, North Carolina, embarked aboard USNS Trenton to improve interoperability while refining the U.S. capability to rapidly deploy forces aboard U.S. Navy expeditionary fast transport vessels.