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Law enforcement officers block off a street following a shooting at Marjory Stoneman Douglas High School, Wednesday, Feb. 14, 2018, in Parkland, Fla. (AP Photo/Wilfredo Lee)
Law enforcement officers block off a street following a shooting at Marjory Stoneman Douglas High School, Wednesday, Feb. 14, 2018, in Parkland, Fla. (AP Photo/Wilfredo Lee)

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    Officers call in for extra help

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Officers call in for extra help

As the clock ticked, officers expanded the search area.

Officers call in for extra help

As the clock ticked, officers expanded the search area.