In this 60 Minutes segment, Frank Larkin, an Invisible Wounds Foundation board member and former Navy SEAL, recounts his search for answers following his son’s death. The story highlights emerging evidence that repeated low-level blast exposure may cause hidden brain injuries in service members and raises questions about how the military identifies, studies, and responds to these injuries.

By linking personal loss with evolving scientific evidence, the segment underscores the stakes of military brain injury research and the consequences of gaps in diagnosis and understanding.