An FBI agent who responded to the Pentagon after the Sept. 11 attacks later dies of cancer, and his widow is now telling his story. NBC News reports that Jack Hess developed stage four cancer following his work at the site.

The reporting places his illness within the broader context of long-term health impacts linked to 9/11 responders, noting that the effects continue decades later. NBC frames the account through the widow’s perspective, describing how the diagnosis and treatment shape their family and life after the attack. The story emphasizes the timeline from the Pentagon response to the later development of advanced cancer.

As presented by the outlet, the focus is on the personal account and the continued relevance of responder health concerns. Other reported details are not provided in the supplied materials, so specific medical findings, agency determinations, or official causation statements beyond the widow’s account are not included here.