Staff Sergeant David B. Lyon was born on November 24, 1981 in Logan, Utah. He enlisted in the Marine Corps and arrived at Marine Corps Recruit Depot San Diego on October 27, 2003. After graduating boot camp and completing Marine Combat Training, Staff Sergeant Lyon transferred to 29 Palms, California for training as a Field Radio Operator. After Military Occupational Specialty School, Staff Sergeant Lyon was transferred to Camp Pendleton, California and assigned to Head Quarters Company, 5th Marine Regiment, 1st Marine Division. In 2004, he was reassigned to Head Quarters Company, 1st Marine Division. In August 2004, Staff Sergeant Lyon deployed to Iraq in support of Operation Iraqi Freedom (OIF). In 2005, Staff Sergeant Lyon made a lateral move to Explosive Ordnance Disposal (EOD). In October of 2005, Staff Sergeant Lyon reported Naval School Explosive Ordnance Disposal for training as a Basic EOD Technician. Staff Sergeant Lyon graduated from EOD School in June of 2006 and was transferred to Marine Wing Support Squadron 373, Marine Corps Air Station Miramar, California. Staff Sergeant Lyon deployed to Iraq again in August 2006. In August 2008, Staff Sergeant Lyon deployed to Afghanistan in support of Operation Enduring Freedom (OEF). Staff Sergeant Lyon deployed to Afghanistan again in April 2010 in support of OEF where he was wounded in action and medically evacuated from Afghanistan. Due to injuries sustained, Staff Sergeant Lyon was medically retired from the Marine Corps on July 30, 2012. Staff Sergeant Lyon died as a result of his injuries on 29 July 2014.
Staff Sergeant Lyon’s personal awards include the Purple Heart Medal, Navy and Marine Corps Commendation Medal with Combat V, two Combat Action Ribbons, and various other campaign medals and decorations.
Staff Sergeant Lyon is survived by his parents Gordon and Lynnette Lyon, his son Ethen Lyon, and his six siblings Jonathan J. Lyon, Michael A. Lyon, Stephen A. Lyon, Christina Lyon Tenhoeve, Rachelle Lyon Wall, and MaryJayne Lyon Crowley.