Chestney did not attribute the accident to lack of understanding of safety precautions.
"Everyone knows the safety precautions, and they were taken," Chestney said. "I don't think [Bolton] was used to spotting in this position."
Bolton said the accident could happen anywhere.
"In any circumstances it's easy for someone to slip," she said.
Chestney said that accidents are uncommon in cheerleading.
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"People fall from stunts, but usually they're caught in the proper way," Chestney said. "This doesn't happen very often."