Dennis O'Brien passed on July 28, 2025, at the age of 71. Born on August 29, 1953, he resided in Erie, Colorado. A service, Dennis & Robin O'Brien Celebration of Life, will be held at Crist Mortuary, Celebration Room, 3395 Penrose Place, Boulder, Colorado 80301, USA, with live streaming available at https://view.oneroomstreaming.com/index.php?data=MTc4MjE2NzEyMzQxODg0MCZvbmVyb29tLWFkbWluJmNvcHlfbGluaw==.
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