Trace joined the Corps straight out of high school, making him a fourth-generation Marine. Following his first tour of Iraq, he obtained enough experience to volunteer as an explosive ordnance disposal technician. After his second tour of Iraq, Trace returned to the U.S., enrolled at Texas A&M, and earned a Bachelor of Science in Chemistry. He brought his experiences and skills to the FBI, where he spent fours years as a field agent with the Hazardous Materials Response Unit. Seeking more dynamic environments, Trace transferred into FBI SWAT, where he excelled at developing new barricade protocols. He then earned a spot in Rainbow where he's shown further interest in research and development on gadget upgrades. Trace's hometown of Plano has a major concentration of Chinese Americans, and as such Trace has conversational level of Mandarin.