OUR STORY

WHO WE ARE

Since 2001, OSO Security has been meeting the needs of our community with the design, installation, and monitoring of residential, commercial, and industrial clients.

We customize each system to the specific needs of each client, with our mission cultivating safe environments, ensuring that we exceed your expectations.

LEADERSHIP

THOMAS BARRETT

President & Owner

Tom grew up in Bozeman, graduating from the University of Montana-Missoula. He began his career in law enforcement, where he worked as a police officer, a sheriff’s deputy, and a special agent in the State of Wyoming. Longing to return to Bozeman, he resigned and returned in 2016 to work in the family business – OSO Security. In 2018, he assumed ownership when his father who founded the business, retired. Married and with daughter and two dogs, he relishes the great Big Sky of Montana and engages fully with the local community

OSO SECURITY’S TEAM

FERNANDO CASTANEDA

He joined Oso Security after many years of working in the low-voltage industry. Fernando cut his teeth in the electrical industry working in the Bakken oilfield and throughout the state of Montana, including private and governmental facilities. Fernando was born in Panama City and spent his childhood between the Seattle and Bozeman area. In his free time, he enjoys spending time with his wife and two boys, archery hunting, and fishing.

SETH MCMILLAN

He was raised between Big Timber, Montana and Frazee, Minnesota. Upon graduating from high school, Seth enlisted in the US Air Force. After spending numerous years in the Air Force, Seth relocated with his family to the Bozeman area and began his career in the low-voltage industry. Along with his good nature, Seth brings years of experience to the table. In his free time, Seth enjoys spending time with his family and enjoying all that Southwest Montana has to offer.