Two fireworks businesses are connected to the Esparto property where a series of explosions July 1 killed seven people.

But there are a number of people from the fireworks industry and small-town public safety positions with ties to the compound and companies based there.

The cause of the inferno — and extent of the fireworks operations at the unpermitted facility — remains unknown.

We know about the people associated with the companies and property under investigation.

Devastating principals

Kenneth Chee is the owner and CEO of Devastating Pyrotechnics. Chee has worked with fireworks in California for 20 years. He’s a San Francisco resident who works as an optician for Costco in the South Bay. Chee assisted other display operators before getting his own license in 2008. Chee was con

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