At the Ohio State Fair, one of the riders injured, Abdihakim Hussein, 19, recalled what happened in the deadly incident:

Hussein and his girlfriend, 20-year-old Hannah Sallee, were riding beside the car that came apart when they noticed the floor of their car lift up.

"I was like, 'That's not supposed to happen,'" she told ABC News. Then, the car next to them broke apart.

"When the piece broke off… I was kind of shocked because the ride was still going," he said. "And I'm thinking, 'It's going to be us next.'"

The Fire Ball swings riders 40 feet in the air while spinning them at 13 revolutions per minute, according to amusement park operator Amusements of America. Hussein and Sallee had originally sat in the car that malfunctioned, but had switched cars before the ride started, they said.

"If we never would have switched it [our seats], that would've been us," he said.

Sallee said the pair attended the fair with her godchildren, who she says "saw those people flying through the air."

(via "Victim injured on malfunctioned ride at Ohio State Fair recalls the 'terrifying' incident")

How safe are amusement park rides really?