In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Passage: Ortiz was born in Bautista, Pangasinan. He graduated in from the Philippine Military Academy in 1979. In 1980 and 1981 he served at Special Warfare Brigade where he took basic courses in Airborne and Special Forces. He also took basic Armor Officer and civil-military operations course at the Training Command, Philippine Army four years later. A year later, he took courses in Civil Affairs, Instructor training, and Officer Qualification Record for becoming a member of Special Forces. All of those courses were taken in Fort Bragg, North Carolina. For his heroic actions on April 6, 1990, in a raid against the Communist New People's Army in Negros Occidental, he was awarded the Philippine Medal of Valor by President Corazon Aquino. In 1987, 1993 and 2006 he took Close quarter battle course for becoming a jumpmaster and during the same years took scuba diving course, all of which were taken in Special Forces School. Later on, he took General Staff course at Fort Leavenworth, Kansas in 2000. He was the 12th commander of the Special Operations Command where he served from November 3, 2008 to July 23, 2010. He went on to serve as the 53rd Commanding General of the Philippine Army
Link Information: Defections from the Armed Forces of the Philippines and the support of the local Catholic hierarchy led to the People Power Revolution that ousted Marcos and secured Aquino's accession on 25 February 1986 Question: How long had Aquino been serving as President when he awarded Ortiz the Philippine Medal of Valor?
Answer: 4