SocietyPentagon first responder relives his 9/11 rescue, 25 years later

Memorials across the US are marking 25 years since the September 11 attacks. Art Castellano, an Arlington County deputy sheriff who was outside the Pentagon when American Airlines Flight 77 hit, says returning home brought no relief and left him carrying lasting guilt over those who were not rescued. First responders faced mental health struggles for years afterward.