SSC Pacific Leadership
​Commanding Officer
 Capt. Melvin K. Yokoyama, Jr.
Capt. Yokoyama assumed command of Space and Naval Warfare Systems Center Pacific (SSC Pacific) in May 2017.
A native of the Big Island of Hawaii, Yokoyama holds a Bachelor of Science degree from Jacksonville University and a Master of Science degree in Systems Engineering (Information Warfare and Electrical Systems Engineering subspecialties) from the Naval Postgraduate School.
A designated Naval Flight Officer in the Unrestricted Line (URL) community, Yokoyama is a member of the Defense Acquisition Corps and a Level II Joint-qualified Officer.
At-sea assignments include duties as Commanding Officer and Executive Officer of Tactical Air Control Squadron TWELVE (TACRON 12), Air Officer for the BONHOMME RICHARD Amphibious Ready Group, Officer-in-Charge Commander Task Group 57.1 (Manama, Bahrain and Al Udeid, Qatar), Officer-in-Charge Commander Task Group 72.5 (Misawa and Okinawa, Japan), EP-3E Operations Officer for Fleet Air Reconnaissance Squadron ONE (VQ-1), and ES-3A Electronic Warfare Mission Commander for Fleet Air Reconnaissance Squadron SIX (VQ-6) deployed onboard the USS ENTERPRISE (CVN-65) and USS JOHN F. KENNEDY (CV-67).
Acquisition and shore assignments include duties as Principal Assistant Program Manager (PAPM) at PEO C4I Information Assurance and Cyber Security Program Office (PMW-130), Assistant Program Manager (APM) for SPAWAR’s Data Center and Application Optimization (DCAO) program office, Chief of Staff for the Department of the Navy’s Data Center Consolidation Task Force, Deputy Commander and Tomahawk Land Attack Missile (TLAM) C4I Officer for US Strategic Command’s (USSTRATCOM) Cruise Missile Support Activity Pacific, and as a graduate student in the Information Warfare curriculum at the Naval Postgraduate School.
 In 2016, Yokoyama volunteered to deploy on a one-year global war on terrorism support assignment (GSA) to the US Embassy, Baghdad, Iraq where he served as the senior military advisor to the Iraqi Minister of Defense in support of Operation INHERENT RESOLVE.
Yokoyama has received a number of personal awards but is most proud of his unit awards because of the teamwork they represent.
​Executive Director
Bill Bonwit
Bill Bonwit was selected as executive director for Space and Naval Warfare Systems Center Pacific (SSC Pacific) in August 2017. SSC Pacific consists of more than 4,800 civilian and military personnel and more than 2,100 contractor support personnel. SSC Pacific has a total obligating authority of more than $2.5 billion. Bonwit leads a diverse and highly technical organization in the research, development, fielding and support of advanced technologies for command, control, communications, computers, intelligence, surveillance and reconnaissance (C4ISR), cyber and space capabilities. Prior to assuming his role as the Center’s senior civilian leader, he was a senior scientific and technical manager (SSTM) and head of the Command and Control (C2) department. His department was responsible for full-spectrum support to various naval, joint, coalition, and national command, control, intelligence, tactical datalink, business and force support systems. He led more than 800 scientists, engineers and technicians who provided a broad spectrum of services across the acquisition lifecycle, including: research, development, integration, test and evaluation, certification, configuration management, deployment and training. The C2 department provides services to numerous commands including combatant commands, naval and Coast Guard fleet units, acquisition program offices and national level offices within the Department of Defense (DoD).
Bonwit’s career in civil service started at Naval Ocean Systems Center (NOSC), a predecessor organization of SSC Pacific, where he served as the project manager for technical support to Joint Interagency Task Force West. He has held a number of positions that support C2 initiatives and served as project manager for a variety of C2 and intelligence systems. He has also served as a branch head, program development lead, and division head for organizations in the C2 department. In those positions, he provided oversight for multiple command and intelligence projects ranging from prototyping to support of Acquisition Category (ACAT) I programs of record for Naval, Coast Guard, Joint Service, Joint Staff, and DoD sponsors.
Bonwit’s operational assignments were aboard USS Cochrane (DDG 21) as main propulsion assistant and navigator, USS Fanning (FF 1076), as engineer officer, and USS Kitty Hawk (CV 63) as damage control assistant. Bonwit’s final tour of active duty was at NOSC, where he chaired SPAWAR’s Warfare System Architecture and Engineering Command, Control, Communications and Intelligence Working Group. After leaving active duty, he remained in the Naval Reserve, serving in various positions including N6 (C4I Directorate) at Inshore Undersea Warfare Group One.
​Command Master Chief
 LSCM Rafael Rios, Jr.
Master Chief Rios is a native of Los Angeles, California.  He entered the Navy’s Delay Entry Program (DEP) during his senior year in high school and two weeks after graduating in 1990, he attended Basic Training at RTC Great Lakes as an undesignated Airman..​ 
After completing basic training and Aviation Apprenticeship School, Airman Recruit Rios reported to Tactical Air Control Squadron Twelve (TACRON-12) on Navy Amphibious Base (NAB) Coronado.  During his tour, he deployed onboard the USS Tarawa (LHA-1) in 1992. 
After his first tour, he was offered to attend the Aviation Storekeeper “A” School in Meridian, Mississippi.  Upon graduating “Top of his Class,” Rios received orders to Helicopter Antisubmarine Squadron Four (HS-4) in Naval Air Station North Island, California.  During this tour in 1994, he made 3rd Class and deployed onboard USS Kitty Hawk (CV-63).

Logistics Specialist Master Chief is a graduate of the U.S. Navy’s Senior Enlisted Academy, Class 126 (Khaki) and completed his Bachelor’s Degree in Criminal Justice.  His personal awards include the Navy and Marine Corps Commendation Medal (five awards), Navy and Marine Corps Achievement Medal (six awards), Military Outstanding Volunteer Service Medal and numerous service and campaign awards.  

He currently serves as the command master chief at Space and Naval Warfare Systems Center Pacific (SSC Pacific).
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