(CNN)Back in April, officers in Thousand Oaks, California, responded to a disturbance at the home where Ian David Long lived.
CNNs Jose Pagliery, Shimon Prokupecz, Scott Glover, Paul P. Murphy, Cheri Mossburg, Ryan Browne, Sonya Hamasaki and Joe Sutton contributed to this report.
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Video: At least 11 injured in shooting at California bar
Telemachus “Tel” Orfanos lost his life in the Borderline Bar and Grill, less than 10 minutes from his home.
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Susan Schmidt-Orfanos, her voice and head shaking with grief and rage, said outside her familys home, “My son was in Las Vegas with one of his friends and he came home. He didnt come home last night. And I dont want prayers, I dont want thoughts, I want gun control and I hope to God nobody else sends me more prayers. I want gun control. No. More. Guns.”
She said she wanted Congress “to pass gun control so no one else has a child that doesnt come home.”
Dean, who joined the Ventura County Sheriffs Office in 1977 as a cadet, holds a masters degree in public administration from CSU Northridge and a masters degree in management from California State Polytechnic University, Pomona. He is a graduate of the California State Peace Officers Command College.
Telemachus Orfanos was a U.S. Navy veteran with a thick beard, an easy smile and a gladiator helmet tattoo.
Photos on Orfanos Facebook page show the Eagle Scout with friends at ballgames or at work. Some photos are embellished with patriotic graphics and another marks the anniversary of the Sept. 11, 2001, terrorist attacks.
Deans term ends Jan. 7, 2019. He was elected in 2010 after a heated campaign against Chief Deputy Dennis Carpenter, who was backed by then-Sheriff Bob Brooks. Dean was re-elected without opposition in 2014.
California Shooting Eyewitness Looked Right at the Gunman: It Seemed Like He Had a Vendetta
Twelve people were killed in the Borderline carnage, including a sheriffs deputy described as a “hero.” The gunman was found inside, dead of an apparently self-inflicted gunshot wound.