Roller coaster riders in Crandon, Wis., were stuck upside down for

The oscillating Fireball was just sliding down from its vertical loop at a festival in Crandon, Wis., on Sunday when it stopped unexpectedly, suspending its passengers for hours.
The oscillating Fireball was just sliding down from its vertical loop at a festival in Crandon, Wis., on Sunday when it stopped unexpectedly, suspending its passengers for hours.

Wisconsin probes how 8 roller-coaster riders became trapped upside down

Eight stuck upside down on US rollercoaster for more than three hours, Wisconsin

Roller coaster riders stuck upside down for hours after malfunction at Wisconsin county fair

Roller coaster gets stuck upside down for hours, leaving passengers hanging

Riders stuck upside down for hours on carnival ride in Crandon

Roller coaster riders in Crandon, Wis., were stuck upside down for hours : NPR

Forest County Festival ride traps people for multiple hours, Local News

8 trapped upside down on Wisconsin roller coaster

Rollercoaster in NC leaves riders stuck upside down

Wisconsin probes how 8 roller-coaster riders became trapped upside down for hours

Watch: Rollercoaster Riders Stuck Upside Down for Hours

Here's what to know about roller coaster safety after 2 recent scares