unlike the associate justices, who tend to labor in relative anonymity, with exceptions such as Associate Justice J. B. L. Reyes in the 1950s to 1970s. By tradition, it is also the chief justice who swears into office the president of the Philippines. One notable deviation from that tradition came in 1986, and later again in 2010. Due to the exceptional political circumstances culminating in the People Power Revolution, on February 25, 1986, Corazon Aquino took her oath of office as president before Associate Justice Claudio Teehankee in San Juan just minutes before Ferdinand Marcos took his own oath of office also as president before Chief Justice Ramon Aquino. Marcos fled into exile later that night. More than two decades afterwards, Benigno Simeon Aquino III followed in his mother's footsteps (with almost similar reasons) by having Associate Justice Conchita Carpio-Morales administer his oath of office, rather than Chief Justice Renato Corona (who was eventually impeached halfway through Aquino's term). Six years later, in 2016, Rodrigo Duterte took his oath of office before Associate Justice Bienvenido Reyes, his classmate at San Beda College of Law, instead of Chief Justice Maria Lourdes Sereno (who would eventually be removed from her position through quo warranto after it was determined that she had been unlawfully holding office ab initio). The chief justice also names the three justices each from the Supreme Court in the memberships of the House of Representatives Electoral Tribunal and the Senate Electoral Tribunal. The chief justice is the chief executive officer of the Philippine judiciary system and together with the whole Supreme Court, exercises administrative supervision over all courts and personnel. List José Abad Santos was unable to preside over the Supreme Court due to the outbreak of World War II. Renato Corona was impeached on December 12, 2011, and convicted on May 29, 2012, removing him from office. Senior Associate Justice Antonio Carpio served as acting chief justice after the Impeachment of Renato Corona from May 30, 2012 to August 25, 2012 and after the removal of Maria Lourdes Sereno via quo warranto proceedings from May 14, 2018 to August 25, 2018. Maria Lourdes Sereno was removed on May 11, 2018 via quo warranto by a special en banc session; the petition alleged Sereno's appointment was void ab initio due to her failure in complying with the requirements of the Judicial and Bar Council. Hence her entire term as