Marines with the Security Element, Headquarters and Service Company, Battalion Landing Team 1st Battalion, 2nd Marine Regiment, 24th Marine Expeditionary Unit are transported by a CH-53 Super Stallion helicopter to the USNS Arctic to conduct a simulated Expanded, Visit, Board, Search and Seizure mission Dec. 5. The Marines conducted three simulated EVBSS mission as part of the Composite Training Unit Exercise. The EVBSS training is meant to prepare the Marines and Sailors to board vessels from sea and air. COMPTUEX, scheduled to take place Nov. 28 to Dec. 21, is the second of three at-sea exercises meant to build cohesion between the 24th MEU and Amphibious Squadron 8 in conducting amphibious operations, crisis response, and limited contingency operations while operating from the sea.