L.A. Sheriff Alex Villanueva, with a machine borrowed from UCLA, is launching an operation that he says can clean up to 30,000 previous N95 masks a day for county health care workers and first responders. 

<p>L.A. Sheriff Alex Villanueva, with a machine borrowed from UCLA, is launching an operation that he says can clean up to 30,000 previous N95 masks a day for county health care workers and first responders.&nbsp;</p>

Advertisement