Dan was born June 13, 1944 in Utica, NY, to Lt. Col. (ret.) Daniel Robert O’Hearn and Elizabeth (Cole) O’Hearn. He attended Gonzaga College High School (D.C.) and Loyola High School of Los Angeles, where he graduated in 1962. He graduated from Loyola Marymount University in 1966 and pursued graduate studies in physics from UC Riverside. Dan met his beloved wife of 51 years, Claudia (Stadden) O’Hearn in 1965 and the two were married December 20, 1969. Dan began his career at Hughes Aircraft Company in CA and in 1971 he transferred to Tucson, AZ where he and Claudia lived until his death.
Dan was the loving father of Kathleen (Ted Haller) O’Hearn and Kristin (Kevin) Greenwood, and devoted grandfather of Ellie Greenwood and Ethan Greenwood. He is survived by his brothers Christopher (Jeana) O’Hearn and Gary (Caroline) O’Hearn, as well as numerous extended family and friends. Dan was predeceased by his parents and brothers Timothy O’Hearn and Patrick O’Hearn.
Dan began his 40 year career with Hughes/Raytheon in integration and test, and later became a senior department manager, where he took most pride in serving as a mentor and helping his colleagues with their careers. He treasured these connections and the life-long friendships that developed.
To his family and friends, Dan was a gentle giant and an unfaltering rock of support. He was a patient and compassionate listener, who was always quick to smile and connect with others. He was a true caregiver, always full of love. Dan was a kind and selfless soul, who will be forever missed by his family and friends.
Graveside services were held at East Lawn Palms Cemetery. Celebration of Life Services will be Saturday, October 2, 2021 at 10:30am, East Lawn Palms Mortuary Chapel. In lieu of flowers, contributions may be made to TMC Hospice (of Tucson Medical Center) or Jesuits West.
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