On March 27, 1969, Maj. Clyde Seiler, 37, a pilot in the 12th Tactical Fighter Squadron, became the Colorado National Guard's first casualty of the Vietnam War.
He was flying his F-100C Super Sabre and on his second strafing pass in the vicinity of Song Be Mountain when the plane was hit by enemy ground fire, causing a premature napalm bomb explosion.
The 120th TFS was just two weeks shy of returning home
Seiler's remains were recovered a year and a half later, in Bien Hoa Province, South Vietnam, near the site where his jet crashed.
He is memorialized on the Vietnam Veterans Memorial in Washington on panel 28W, line 64.