Experts trying to prevent a tank of hazardous ⁠chemicals ⁠from exploding in Southern California found a "potential ⁠crack" in the container that might be reducing the pressure, a fire official said on...

Firefighters have found a potential crack in the massive tank filled with a toxic chemical at risk of explosion in Southern California.

“No one has ever had this situation before because the chemical is so volatile,” said TJ McGovern, the interim fire chief of the Orange County Fire Authority, who called the situation “unprecedented.”