in watertown -- >> reporter: as the nation watched the events unfold over the last 24 hours, kevin corcoran watched, too. at boston medical center. the hospital was on lockdown for much of the day. but kevin's been here since monday, ever since his wife, celeste, and their 17-year-old daughter, sidney, were seriously injured at the marathon. their son tyler decided to stay home at the last minute. but the rest of the family was here at the finish line, waiting for celeste's sister, carmen acabo, to cross. >> i had been turning around to look at friends to my left and behind me about 10 or 15 feet. they were holding up signs. we'd say things to each other, do you see her or what have you. >> i couldn't wait to see if everyone was so crazy at mile 22 and mile 19 what's it going to be like when i run down boils-ton. >> it happened just as she neared mile 26. >> so when the bomb went off and it hit you, what was happening around you, what did you first notice? what went through your mind? >> i have a vivid memory of seeing my daughter and my friends being blown back, falling backwards, my daugh

. >> reporter: and after all they have been through, kevin corcoran has a message for those responsible for this tragedy. >> you didn't succeed in your objective. we're still going to be there and there's nothing that you can do to quell the human spirit. and you failed. you failed at what you did. >> don't know how these families are possibly coping. we have put a link to their family website that he mentioned on our website tonight for all those wishing to help the corcoran family in the days and tough weeks ahead. >>> when the all-clear was sounded tonight in boston, the president spoke from the white house briefing room. we'll have part of that for you coming up next. [ male announcer ] why is kellogg's crunchy nut so delicious? because every flake is double-toasted... splashed with sweet honey... and covered in rich double-roasted peanuts. mmm. [ hero ] yummy. [ male announcer ] kellogg's crunchy nut. it's super delicious! aaah! aaaaah! theres a guy on the window! do something, dad! aaaah! aaaah! what is happening? they're rate suckers. their bad driving makes car insurance more ex

in watertown -- >> reporter: as the nation watched the events unfold over the last 24 hours, kevin corcoranatched, too. at boston medical center. the hospital was on lockdown for much of the day. but kevin's been here since monday, ever since his wife, celeste, and their 17-year-old daughter, sidney, were seriously injured at the marathon. their son tyler decided to stay home at the last minute. but the rest of the family was here at the finish line, waiting for celeste's sister, carmen acabo, to cross. >> i had been turning around to look at friends to my left and behind me about 10 or 15 feet. they were holding up signs. we'd say things to each other, do you see her or what have you. >> i couldn't wait to see if everyone was so crazy at mile 22 and mile 19 what's it going to be like when i run down boils-ton. >> it happened just as she neared mile 26. >> so when the bomb went off and it hit you, what was happening around you, what did you first notice? what went through your mind? >> i have a vivid memory of seeing my daughter and my friends being blown back, falling backwards, my daughte

two victims in the photo he takes are mother and daughter, sell left and sydney corcoran and the man helping sell left is kevinthey're waiting for their sister to cross the finish line. >> i have a vivid memory of seeing my daughter and my friends being blown back, falling backwards. my daughter's arms outstretched like this and falling backwards. and nobody was standing up anymore in front of me. so for a couple of seconds, i just looked left and right and then looked down and there she was, my wife celeste. i saw her eyes were open. i know she's alive. and then i start looking around, and there are limbs everywhere and blood and i looked down at her body to see if she's okay, and i notice her legs. when i saw that, instinct takes over. you take your belt off, put a tourniquet on, yell to a guy who happened to be running towards me. he gave me his belt. i put on another one, and then i just laid down next to her and just told her i loved her and that everything would be okay, and i just kissed her face and just gently caressed her while people were trying to get to us. >> by the time kevin turns around, his d

celeste and sydney corcoran and the man helping celeste is her husband, kevin.he family is there waiting for celeste's sister carmen to cross the finish line. >> i have a vivid memory of seeing my daughter and my friends being blown back, falling backwards. my daughter's arms outstretched like this and falling backwards. and nobody was standing up anymore in front of me. so for a couple of seconds, i just looked left and right and then looked down and there she was, my wife celeste. i saw her eyes were open. i know she's alive and then i start looking around and there are limbs everywhere and blood and i look down at her body to see if she's okay and i notice her legs. when i saw that, instinct takes over. you take your belt off, put a tourniquet on, yell to a guy who happened to be running towards me. he gave me his belt. i put on another one and laid down next to her. and just told her i loved her and that everything would be okay and i just kissed her face and just gently caressed her while people were trying to get to us. >> reporter: by the time kevin turns