Discover how blindness and a bond between dog and man saved lives and brought hope during one of America's darkest days.

At 12:30 a.m. on 9/11, Roselle whimpered at Michael Hingson's bedside. When the trained guide dog was "on the clock," nothing could faze her. But without her harness she was free to be scared of the coming thunderstorm. The two had a busy day of meetings and an important presentation ahead. A normal day. Until they went to the office. In Thunder Dog, follow Michael and Roselle as their lives are changed forever by two explosions and 1,463 stairs.

Discover how blindness and a bond between dog and man saved lives and brought hope during one of America's darkest days.

It was 12:30 a.m. on 9/11 and Roselle whimpered at Michael's bedside. As a trained guide dog, when she was 'on the clock' nothing could faze her. But that morning, without her harness, she was free to be scared. In Thunder Dog, follow Michael and his guide dog, Roselle, as their lives are changed forever by two explosions and 1,463 stairs.