For nearly four years, the Vallejo Police Department has patrolled the city with the help of drones, advanced surveillance tools that allow police to track people from above. To prevent their abuse, the department adopted a policy that requires the police chief or a designee to give written permission when officers put drones in the air.

But an Open Vallejo review of the 91 drone flights the department has logged between 2018 and December found no record that any individual flights had been authorized. Asked to produce such records last May, the department said it found none. Now, following inquiries by Open Vallejo, the department plans to weaken the policy, records obtained by this newsroom show. 

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