Former employee sheds light on Thermotron after FBI raid

Thermotron Industries, Holland, Mich. (December 11, 2013)

HOLLAND, Mich. (WZZM) -- WZZM 13 is learning new details about the business that was targeted by an FBI raid from a former employee.

On Wednesday, FBI agents entered Thermotron Industries on Kollen Park Drive and put the building on lockdown. The former employee explained more about what the company sells, who it sells to, and why it might be causing concerns.

MORE:FBI raids Holland business

Few words are coming from Thermotron Industries, a day after the FBI raided the building. However former employee Mark McFarland has plenty to talk about, after working for eight years with the company until 1992.

"I kind of went 'Wow, what happened there?' We were the best in the world at what we did," said McFarland.

WZZM 13 asked McFarland if he ever witnessed anything like the FBI raid on Wednesday. "Never, when I worked there and I still have friends that work there."

According to Thermotron's website, the company sells high tech chambers that test the durability of a product in a variety of circumstances, including high altitude and extreme temperature.

"We built a chamber once that fit a whole tank in, and then they can simulate all kinds of weather," explained McFarland.

Thermotron sells products to 40 countries around the world. A source tells WZZM 13 that the FBI raid was in connection to a national security concern.

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Former employee sheds light on Thermotron after FBI raid