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Pictures | Fri Dec 13, 2013 | 6:35pm EST

Colorado school shooting

<p>Students gather and reunite with their parents at a fast food joint across from Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon</p>

Students gather and reunite with their parents at a fast food joint across from Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

Students gather and reunite with their parents at a fast food joint across from Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>Students walk with their hands raised as they are escorted out of Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013.  REUTERS/Evan Semon</p>

Students walk with their hands raised as they are escorted out of Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

Students walk with their hands raised as they are escorted out of Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>A woman puts her arm around a girl as students are reunited with their family members after being escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon</p>

A woman puts her arm around a girl as students are reunited with their family members after being escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13,...more

A woman puts her arm around a girl as students are reunited with their family members after being escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>Law enforcement officers escort students out of Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon</p>

Law enforcement officers escort students out of Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

Law enforcement officers escort students out of Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>Police and rescue workers arrive at Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013.  REUTERS/Evan Semon</p>

Police and rescue workers arrive at Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

Police and rescue workers arrive at Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>A woman reacts as students are reunited with their family members after being escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon</p>

A woman reacts as students are reunited with their family members after being escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan...more

A woman reacts as students are reunited with their family members after being escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>Students gather outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013.

 REUTERS/Evan Semon</p>

Students gather outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

Students gather outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>Students hug each other and wait outside Arapahoe High School after being escorted out of the building, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013.  REUTERS/Evan Semon</p>

Students hug each other and wait outside Arapahoe High School after being escorted out of the building, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

Students hug each other and wait outside Arapahoe High School after being escorted out of the building, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>Students gather outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013.

REUTERS/Evan Semon</p>

Students gather outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

Students gather outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>Rescue workers and officers make their way to Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013.  REUTERS/Evan Semon</p>

Rescue workers and officers make their way to Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

Rescue workers and officers make their way to Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>Students walk out of Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon</p>

Students walk out of Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

Students walk out of Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>A man and a woman hold hands as they wait outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon</p>

A man and a woman hold hands as they wait outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

A man and a woman hold hands as they wait outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>An armed police officer walks outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon</p>

An armed police officer walks outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

An armed police officer walks outside Arapahoe High School, after a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>A man hugs his daughter after she was escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon</p>

A man hugs his daughter after she was escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

A man hugs his daughter after she was escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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<p>A man puts his arm on a family member who was escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon</p>

A man puts his arm on a family member who was escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

A man puts his arm on a family member who was escorted out of Arapahoe High School, following a shooting incident where a student opened fire in the school in Centennial, Colorado, December 13, 2013. REUTERS/Evan Semon

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