"Last year I had a parent, I still get emotional about it, " Krum said.
CNN: Fort Bragg families struggle with risks of war
"You have to teach with your heart sometimes, " said fifth-grade teacher Valerie Krum.
"In the back of their minds, that's always there" Krum said.
The injured include Eddie Huckaby, a 53-year-old Krum, Texas, resident who suffered a leg gash when a large piece of metal hit him as he was watching the race, his brother Terry Huckaby told CNN affiliate WKMG.
CNN: February 24, 2013 -- Updated 1551 GMT (2351 HKT)
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