Dunham was on patrol when his unit was attacked by insurgents, one of whom released a hand grenade. Dunham covered the grenade with his helmet and body, saving several other men. He died eight days later.
A post office and a guided missile destroyer have also been named for Dunham and, in 2007, his number was retired by the Don Raabe Big 30 All-Star Charities Classic Committee. He played in the game after his senior year of high school.