Body armor companies are having a surge of sales for bulletproof backpacks following the Sandy Hook Elementary School, in Newtown, Conn., massacre.

Although the nondescript, black, child-size backpacks sold by the Massachusetts body armor company Bullet Blocker look like regular backpacks, a sheet of body armor is sewn inside each bag as "another protective layer."

Elmar Uy, chief operating officer at Bullet Blocker, noticed his sales numbers were up "tenfold" on Friday, the day of the massacre, but said he didn't understand why until he turned on the news...

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