<p>Firefighters worked to rescue 24 people who were stranded when a roller coaster became stuck at Six Flags America in Maryland on Thursday, April 13. Fire department officials said the riders were upright and no one appeared to be in distress.</p><p>The looping roller coaster reaches speeds of 60 miles per hour and was introduced in 1999, according to the park’s website</a>.</p><br />
