Heroes Emerge from Boston Marathon Bombing

Men and women rose to the occasion, helping those injured when bombs struck the marathon.
2:51 | 04/16/13

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Transcript for Heroes Emerge from Boston Marathon Bombing
The stories of the heroes here in Boston yesterday the men and women who rushed into the chaos. To try to help just after those harrowing explosions rocked the finish line of the Boston Marathon. And ABC's -- Davis is back with us this morning with the stories of those who ran -- the aid of the wounded man to. And Josh we've talked about what a difference it likely made they have already had first responders right on the scene of the marathon. The veteran -- there who weren't trained for this who simply adrenaline kicked in and they stepped in. To do what they could to help. This was the moment when thousands of people instead of running to the finish line. Began running for their lives. And then -- those who ran straight toward the chaos. That's what Americans -- and times of crisis we come together and we help one another. Moments like these. Terrible as they don't show our weakness they show us strength. This morning they are being hailed as heroes. Carlos. VIP section passing out American flags for US soldiers when the bomb exploded right in front of them. My first means that once we just put across the street. -- stop helping now the people he sprang into action stopping the bleeding and an injured bystander who lost both his legs. He never left his side holding his hand until help arrived. But in shock -- former New England patriot Joseph Andruzzi who was there in support of his cancer foundation. Is seen here carrying an injured woman to safety. And army veteran Bruce Mendelsohn was blocks away from the explosion still he says he was knocked out of his seat but then headed toward the scene. I was at my brother who it who had just finished a marathon. And I yelled at him to get all the people back away from that windows her blood smears. On the sidewalk there are people. Injured with the a lot of previous. Lower body injuries I tried to render what medical assistance I could I tried to help by the Boston PD which is on the scene. And there were stories of bravery one witness tweeting this picture dozens of ambulances lining the streets with the caption. This is what a hero looks like another man tweeting. My boss's brother was at the Boston Marathon -- -- carried a five year old with loss -- five blocks to an ambulance -- hero. This morning we see that for every act of terror. Who. The heroes emerge. It all comes down to that natural instinct that knee jerk reaction of fight or flight these heroes of the people who didn't fully and even the first responders they were expecting things like blisters dehydration and and cramps not lost limbs and and shrapnel wins but he's been holding rose vacation and they're being celebrated my thanks. -- Very much.

This transcript has been automatically generated and may not be 100% accurate.

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