they're not a state agency, but I thought they were just in Santa Clara county. per their website, they serve Alameda County, Santa Clara County, San Francisco County, San Mateo County, and Santa Cruz County.

A partnership of 17 local, state, and federal agencies, with the Santa Clara County District Attorney's Office designated as the lead agency. The REACT Task Force is one of five in the State of California and authorized under California Penal Code 13848. ... Established in 1997 by the California state Department of Justice.

I guess they went for the nearest target first, then. I think they'd still need a warrant in each county, or they'd have had the state Attorney-general's office procure the warrant...but I'm too tired to go back and look at it now.