He was assigned to the 96th Civil Engineer Squadron, based at Eglin Air Force Base, Florida.
Tech. Sgt. Douville had been in the USAF since 1997. He was a bomb-disposal technician who his former EOD instructors described as having "a quiet presence."
Married for 14 years, he leaves his wife LaShana, son Daniel Jr., and daughters Jadelynn and Ayjah.