

Born on November 1, 1942, in Weaverville, North Carolina, Dempsey was the son of Josephine May Hyatt and Thomas Arthur Ventress. He grew up with a strong sense of determination and curiosity that would carry him throughout his life. He graduated from Montgomery Blair High School in 1960 and later pursued higher education at The George Washington University, where he earned his degree in engineering between 1975 and 1980—an accomplishment that reflected his dedication to both personal growth and professional excellence.
Dempsey went on to serve with distinction as an Engineer Support Element Chief with the 402nd Electronic Maintenance Support Squadron at Robins Air Force Base. Over the course of his career, he earned the respect of his colleagues for both his technical expertise and his thoughtful leadership. In 2000, he developed the original concept for what would become the Versatile Depot Automatic Test Equipment Transformation (VDATS) project, a forward-thinking innovation that demonstrated his ingenuity and lasting impact in his field.
Beyond his professional achievements, Dempsey will be remembered most for the life he built with those he loved. He was a proud father, and a deeply cherished grandfather and great-grandfather. His family was the center of his world, and he took great joy in celebrating their accomplishments, sharing stories, and creating lasting memories together.
Dempsey had a love for the simple pleasures in life. He enjoyed many rounds of golf with close friends, where laughter and camaraderie were just as important as the game itself. A passionate sports fan, he followed a wide range of athletics and remained a loyal supporter of Mercer University Athletics for many years. Whether watching a game or discussing the latest scores, he delighted in the shared spirit of competition and community that sports brought into his life.
He also had a special place in his heart for his beloved pets, whose companionship brought him comfort and happiness. Those who knew Dempsey remember his steady presence, his quiet strength, and his ability to make others feel at ease.
He is survived by Rebecca Howard Ventress; his stepson, Michael Joseph Reynolds; and his daughter, Kristen Rebecca Ventress. He leaves behind five grandchildren—Hunter Christian Ventress; Chelsie Reynolds Stewart (Max); William Caden Yates; Anna Pearl Reynolds; and Alyssa Pearl Ventress—each of whom brought him immense pride and joy. He is also survived by his great-grandson, Johnathan Stanley Stewart, who was a bright light in his later years.
Dempsey’s life was one of dedication, resilience, and love. He will be remembered for his contributions, his kindness, and the deep and lasting impact he made on all who knew him.
A memorial service will be held Tuesday, May 26, 2026 at 11:00 AM at Snow's Memorial Chapel, Bass Road with Rev. Paul Dziadul officiating. The family will greet friends following the service and burial will be at a later date.
Snow's Memorial Chapel, Bass Road, has charge of arrangements.
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