Boatswain’s Mate 1st Class Lisa Eakin and Boatswain’s Mate 2nd Class Albert Sawyer from Expeditionary Port Unit 105, a U.S. Navy Reserve detachment with Military Sealift Command Europe and Africa, discuss watch standing procedures before boarding M/V Green Bay, contracted roll-on, roll-off vessel with Military Sealift Command, during DEFENDER-Europe 20. EPUs are mobile units that can be deployed worldwide in response to events, such as a humanitarian crisis or other military mission.