Sailors assigned to Task Group 56.7.4 transit the Arabian Gulf aboard a riverine command boat during a training exercise on Jan. 21, 2014. Riverine command boats provide a multi-mission platform for the U.S. 5th Fleet area of responsibility by focusing on maritime security operations, maritime infrastructure protection, and theater security cooperation efforts, in addition to offensive combat operations. (U.S. Navy photo by Mass Communication Specialist 1st Class Michelle L. Turner)