This 5” gun mount was operated by USS Missouri’s Marine Detachment (MarDet). The Marines provided security, performed ceremonial functions, and were the only ones authorized to carry firearms while on board.

The Combat Engagement Center (CEC) was added to USS Missouri during her modernization period from 1984-86. Previously, this space was the Flag Officer’s Quarters during the 1940s and 50s. In fact, this was Admiral Halsey’s quarters while the Mighty Mo served as his Third Fleet flagship towards the end of WWII.

When the battleship Missouri was being modernized, this space was converted for use with the modern weapons systems aboard. In this room you will find the control stations for the Tomahawk and Harpoon guided missile systems, the operator’s console for the Close-In Weapon System (CIWS) as well as air and ground radar stations.

The prominent blue chair in the center of the room was reserved for the Tactical Action Officer (TAO) who would oversee and direct the battleship’s combat operations. The illuminated plot tables towards the back of the room provide orientation and proximity of vessels and aircraft in the surrounding area.

DID YOU MO?: While the CEC was used specifically for control of the Missouri’s modern weapons systems, the CIC (Combat Information System) on the Fourth Deck below, adjacent to the Main and Secondary Battery Plot rooms, was always used to control the Missouri’s main and secondary battery guns.