As the last surviving US servicemen who witnessed the aftermath of Hiroshima and Nagasaki reach their 100s, their harrowing firsthand accounts—and warnings against future nuclear conflict—offer a fading human bridge to the reality of atomic warfare.

Every American atomic veteran we spoke to for the film told us that they’d never been asked to publicly share their stories. Not once in 81 years. This is a collective failure. In truth, historians, journalists, and filmmakers alike should be asking these veterans about their lived experience. We can’t afford to let the human consequences of nuclear war become an abstraction.