About 50,000 people fled when a chemical tank from aircraft parts manufacturer GKN Aerospace threatened to explode in Orange County. Some of them say they no longer trust the air or the company after the incident.

Residents were back in their homes near a chemical tank that overheated in Southern California

A faulty valve in the tank's cooling system triggered the evacuation of 50,000 people in and around Garden Grove, Orange County

About 50,000 people fled when a chemical tank from aircraft parts manufacturer GKN Aerospace threatened to explode in Orange County. Some of them say they no longer trust the air…