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April 25th, 2013
11:22 PM ET

Paramedic saved little girl who lost leg

Anderson Cooper talks with Matt Patterson about his heroic actions after the Boston Marathon bombings. The firefighter and paramedic was off-duty the day of the attack and eating at a nearby restaurant. He rushed to the scene and amidst the chaos he saw a 7-year-old girl severely hurt and dazed. His full attention was focused on helping Jane Richard.

When Patterson saw most of her left leg was gone above the knee, he used a belt as a tourniquet to try to stop the rapid blood loss. He credits Michael Chase, a stranger who asked how he could help, with playing a crucial role in keeping Jane alive.

After they found a medic to transport her to the hospital, Patterson went back to help others, including Jane's 8-year-old brother. He administered CPR, but Martin Richard did not have a pulse and ultimately didn't survive. He is the youngest victim to die in the attack.

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Filed under: Boston Marathon Attack
April 25th, 2013
11:17 PM ET

The ultimate bomb-sniffing dogs

CNN's Randi Kaye reports on dogs that are specially trained to detect bomb vapors over incredible distances. She traveled to Auburn University to see how the program works.

Researchers call them vapor wake dogs because of their ability to find explosives before bombs are placed somewhere – like inside a backpack on a person moving through a crowd. The skill is so unique that the university hopes to patent it.

Puppies begin training at an early age, and the school has its own breeding program. They typically work with Labradors and Spaniels. Paul Hammond, whose company IK9 is working with Auburn, explains that a dog's olfactory system is 220 million scent cells compared to a human's five million scent cells.

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Filed under: Boston Marathon Attack
April 25th, 2013
11:13 PM ET

Did the Boston bombing suspects have help?

Bob Baer, Maajid Nawaz and Juliette Kayyem discuss who may have influenced the Boston bombing suspects and how they were trained to make the explosive devices used in the attack.

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Filed under: Boston Marathon Attack
April 25th, 2013
11:10 PM ET

Questions over questioning the suspect

The timing of the Boston bombing suspect's Miranda rights has sparked debate. Mark Geragos and Jeffrey Toobin weigh in.

April 25th, 2013
11:07 PM ET

Friends of bombing suspects questioned

In their exhaustive investigation, FBI agents are talking to people who had contact with the Boston bombing suspects. CNN's Drew Griffin reports.

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Filed under: Boston Marathon Attack
AC360 411: The ultimate bomb-sniffing dogs
April 25th, 2013
08:00 PM ET

AC360 411: The ultimate bomb-sniffing dogs

Editor's note: Don't miss Randi Kaye's report on the dogs training at Auburn University and see them in action at 8 and 10 p.m. ET tonight.

Since the deadly Boston bombings, there’s been a lot of talk about what could have been done to prevent the attack. Bomb-sniffing dogs swept the area twice before runners crossed the finish line, according to the Boston Globe.  “Dogs are not in infallible,"  Boston Police Commissioner Edward Davis told the newspaper. “With such a crowd, the dog can't check every individual and package,” he added. But researchers at Auburn University are training what may be the ultimate bomb sniffing dogs. Here’s the AC360 411 on the so-called Vapor Wake Dogs:

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Filed under: AC360° 411 • Boston Marathon Attack
Tonight on AC360: Boston hero
April 25th, 2013
07:02 PM ET

Tonight on AC360: Boston hero

After the blasts at the Boston Marathon finish line, Matt Patterson went toward the chaos and lifted a victim from the ground. Her name is Jane Richard. She was watching the runners with her family on Boylston Street when the bombs went off. Sadly, her brother Martin didn't survive the attack.

In an interview with Anderson, Patterson, a firefighter and paramedic who was off-duty that day, says he had tunnel vision. In the mayhem, the sight of a little girl dazed and badly hurt stood out to him.

He used a belt as a tourniquet on her leg knowing the loss of too much blood could be fatal. He found medics, put the 7 year old in their care and went back to the scene of the bombing to help others.

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Filed under: Boston Marathon Attack
April 25th, 2013
01:46 AM ET

Who is Misha?

The older bombing suspect may have been "brainwashed" by a friend from Cambridge, Mass. named Misha, says an uncle. Brian Todd reports.

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Filed under: Boston Marathon Attack • Brian Todd
April 25th, 2013
01:34 AM ET

The CIA, FBI and bombing suspect #1

Bob Baer, Tom Fuentes and Juliette Kayyem discuss Russia's request for the U.S. to talk to Tamerlan Tsarnaev.

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Filed under: Boston Marathon Attack • FBI • Robert Baer
April 25th, 2013
01:26 AM ET

Boston suspects' dad coming to U.S.

A family rep. tells CNN the mother of the bombing suspects won't be making the trip. Nick Paton Walsh reports.

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