Question: Who supervises the subordinate that occupies the majority of Chatan, Japan?

Context articles: Chatan, Okinawa
National Police Agency Security Bureau (Japan)
78th Signal Battalion (United States)
Attorney General of California
Central Readiness Force
Kadena Air Base
Debbie Matz
Resident assistant
United States Forces Japan
Japan Shogi Association

Chatan (北谷町 , Chatan-chō , Okinawan: "Chatan") is a town located in Nakagami District, Okinawa Prefecture, Japan.
 As of October 2016 the town had an estimated population of 28,578 and the density of 2,100 per km².
 The total area of Chatan is 13.62 km2 .
 53.5% of the land area of the town is covered by United States military bases.
The Security Bureau of the National Police Agency (警察庁警備局 , Keisatsu-chō Keibi-kyoku ) is a bureau of the Japan's National Police Agency in charge of national-level internal security affairs.
 It supervises the Security Bureau and the Public Security Bureau of the Tokyo Metropolitan Police Department, and Security Departments of the Prefectural Police Departments for those issues.
The 78th Signal Battalion is a strategic Signal Battalion subordinate to the 516th Signal Brigade and headquartered at Camp Zama, Japan.
 The battalion supports the United States Army Japan (USARJ).
 The battalion has four subordinate units - Headquarters and Headquarters Detachment (HHD) (Camp Zama), 287th Signal Company (Camp Zama), 333rd Signal Company (Okinawa), and 349th Signal Company (Okinawa).
The Attorney General of California is the State Attorney General of California.
 The officer's duty is to ensure that "the laws of the state are uniformly and adequately enforced" (California Constitution, Article V, Section 13.)
 The Attorney General carries out the responsibilities of the office through the California Department of Justice.
 The Department employs over 1,100 attorneys (meaning that the AG supervises the governmental equivalent of a law firm much larger than the vast majority of U.S. private law firms) and 3,700 non-attorney employees.
The Central Readiness Force (中央即応集団 , Chūō Sokuō Shūdan ) was established on March 28, 2007, following the upgrading of the Japanese Defense Ministry from the former Japanese Defense Agency.
 It was initially based at Japan Ground Self-Defense Force (JGSDF) Camp Asaka in Nerima, Tokyo.
 The command supervises a number of different units, whose roles range from special forces operations to advance preparation for greater JSDF deployments.
 The unit can also be deployed as Japan's response to combat operations during peacekeeping missions as a rapid reaction force.
 In March 2009, the force was transferred to Camp Zama, in Sagamihara, in the Kanagawa Prefecture.
 As a part of the Japanese government's National Defense Program Guidelines which were developed in response to the need to improve the JGSDF's capabilities to deal with new defense issues such as foreign peacekeeping operations and anti-terrorist operations.
Kadena Air Base (嘉手納飛行場 , Kadena Hikōjō ) , (IATA: DNA, ICAO: RODN) is a United States Air Force base in the towns of Kadena and Chatan and the city of Okinawa, in Okinawa Prefecture, Japan.
 Kadena Air Base is home to the USAF's 18th Wing, the 353d Special Operations Group, reconnaissance units, 1st Battalion, 1st Air Defense Artillery, and a variety of associated units.
 Over 20,000 American servicemembers, family members, and Japanese employees live or work aboard Kadena Air Base.
 It is the largest and most active US Air Force base in the Far East.
Debbie Matz served as the eighth board chairman of the National Credit Union Administration (NCUA).
 She was appointed by U.S. President Barack Obama.
 NCUA is an independent federal agency that oversees the United States’ credit union industry, which has more than $1.2 trillion in assets.
 NCUA supervises federal credit unions and operates the National Credit Union Share Insurance Fund (NCUSIF) that protects deposits up to $250,000 of nearly 105 million account holders in all federal credit unions and the overwhelming majority of state-chartered credit unions.
A resident assistant (also variously known as a house fellow, resident advisor, community assistant, resident mentor, residence don, peer advisor, community advisor, collegiate fellow, or senior resident), commonly shortened to RA, is a trained peer leader who supervises those living in a residence hall or group housing facility.
 The majority of RAs work at colleges, universities, or residential mental health and substance abuse facilities.
The United States Forces Japan (USFJ) (在日米軍 , "Zainichi Beigun" ) is an active subordinate unified command of the United States Pacific Command (USPACOM).
 It was activated at Fuchū Air Station, Tokyo, Japan on 1 July 1957 to replace the Far East Command (FEC).
 USFJ is commanded by the Commander, U.S. Forces, Japan (COMUSJAPAN).
 COMUSJAPAN is also the Commander, Fifth Air Force.
 At present, USFJ is headquartered at Yokota Air Base, Tokyo, Japan.
The Japan Shogi Association (日本将棋連盟 , nihon shōgi renmei ) , or JSA, is the primary organizing body for professional shogi in Japan.
 The JSA sets the professional calendar, negotiates sponsorship and media promotion deals, helps organize tournaments and title matches, publishes shogi-related materials, supervises and trains apprentice professionals as well as many other activities.