Electronic Technician 2nd Class (Submarines) (ET2) (SS) Steven W. Lockhart Jr., seated, navigation watchman, and Electronics Technician 1ST Class (Submarines) (ET1) (SS) Cecil T. Parrish, navigation supervisor, look at papers during precommissioning activities aboard the nuclear-powered ballistic missile submarine OHIO (SSBN-726). The submarine was built by General Dynamics Corp