John Jabbusch, 73, of Siler City passed away Saturday, February 28, 2026. John lived a life defined by curiosity, service, and an entrepreneurial spirit grounded in lifelong learning. Born in Birmingham, AL, he was the son of Art and Virginia Jabbusch, formerly of Siler City. From an early age, John showed a fascination with how things worked—an interest that would shape both his career and his legacy.

A 1971 graduate of Jordan-Matthews High School, John went on to attend UNC Chapel Hill, where he majored in Chemistry. His desire to serve his country led him to the United States Navy, where he served from 1975 to 1981. Trained in Advanced Electronics as a Data Systems Technician, he attained the rank of DS1 and served in intelligence processing roles aboard two aircraft carriers, the USS Saratoga and the USS Eisenhower, experiences that blended his love of technology, problem-solving, and service.

Following his military career, John worked for Intergraph Corporation based in Huntsville, Alabama, before deciding to build something of his own. In 1984, he founded Carolina Advanced Digital, Inc. (CAD). What began as an entrepreneurial vision grew into a premier provider of secure IT solutions and services, ultimately focused exclusively on supporting U.S. federal customers. John remained actively involved as CEO throughout his life, proud of the company, its people, and its mission.

John believed strongly in sharing knowledge and supporting his community. He taught one of the earliest continuing ed computer classes at Central Carolina Community College, helping introduce students to a rapidly changing technological world. He was also active in the Chatham County Small Business Association in its early years and was a member of NCMS, a professional security group focused on cybersecurity and classification for federal agencies involved in national security. John’s love of Halloween inspired him to host an annual party for many years, featuring elaborate outdoor decorations he programmed to feature animation and synchronized to music.

Above all, John valued family and enduring friendships. He is survived by his wife of 48 years, Susan Jabbusch; his daughter, Jennifer Jabbusch, and her fiancé Jonathan Davis (JD) of Cary; and his longtime friend, Michelle Dziengel. Those who knew him will remember his intellect, humor, loyalty, and deep passions—for space exploration, espionage history, and scuba diving.

There will be no public service, with the family holding a private celebration of his life. In keeping with John’s wishes and lifelong interests, the family will honor him with a launch of his ashes into Earth orbit, as well as a United States Navy burial at sea—a fitting tribute to a man whose life bridged innovation, service, and adventure.