Program, supporting missions associated with the Marine Corps Security Force Battalion, or are qualified in their senior post or watch station consistent with their current pay grade and duties assigned. The insignia represents completion of twelve months of fully qualified service to the NWS mission. A gold star mounted at the bottom of the insignia indicates an additional year of qualified service to the NWS mission. A silver star indicates five years of fully qualified service. Submarine Patrol The Submarine Combat Patrol insignia is a breast insignia worn by Navy personnel who have completed war patrols. Such patrols were conducted during World War II and this insignia has not been awarded since that time. The SSBN Deterrent Patrol insignia or "boomer pin" is a breast insignia worn by Navy personnel of the submarine service who have completed strategic deterrent patrols in nuclear ballistic missile submarines. It is the successor to the Submarine Combat Patrol insignia awarded for submarine patrols during World War II. Upon the completion of their 20th successful patrol, personnel are upgraded from silver to gold. Qualified personnel wear the insignia as a secondary device, after the Submarine Warfare device. Underwater The Deep Submergence insignia is worn by Navy personnel who are qualified in submarines and have completed one year of regular assignment to a manned or unmanned deep submersible. Diver insignia are issued to personnel who are qualified divers and is given in several degrees. The first degree of the diving insignia is Scuba Diver. The remaining insignia are awarded for deep sea dive qualifications and are issued in the degrees of Second Class, First Class, and Master Diver. There also exists a Diving Officer insignia for officers who completed Basic Diving Officer course, and insignia for medical personnel who have qualified as both divers and medical response personnel to medical emergencies underwater. Enlisted personnel who are dive qualified place "(DV)" after their rating to indicate this skill. Example: "PO2(DV) Jones" is a Petty Officer 2nd Class Jones, who is Diver-qualified. Badges Identification The Presidential and Vice Presidential Service badges are worn on the right side at a level corresponding to badges worn on the left side on dress uniforms, and center of the right pocket on other uniforms. The badges for Office of the Secretary of Defense and Joint Chiefs of Staff are worn on the left breast pocket, 1/4 inch below medals or secondary breast