ground zero

California is ground zero for the H5N1 bird flu virus in dairy cattle and dairy workers.

Now, he worries that the landfill will become ground zero for a dangerous experiment in which government officials are blurring the lines between what constitutes a hazardous waste facility and a municipal landfill.

Kayyem will initially work out of Caruso’s offices at the Grove and will later move to “ground zero” in the Palisades, Caruso said.

The United States is ground zero for the H5N1 bird flu.

He has previously said Chicago will be "ground zero" for the mass deportations.