By CLAIRE MARTIN
The killer at Sandy Hook Elementary School shot through a window, a detail that stuck with the co-founder of School Guard Glass, maker of a strong glass intended to thwart intruders.
Published: December 27, 2014 at 07:00PM
from NYT Technology http://www.nytimes.com/2014/12/28/technology/out-of-tragedy-a-protective-glass-for-schools.html
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