Concretely, most of the time, Google is the executor of these warrants. Now it's totally possible that you will find a Google employee sympathetic to law enforcement who is willing to kick off a flume job to isolate the users who were in the vicinity.
But that request is not going to make it through normal channels. And most of the customer data (especially PII) is very tightly controlled, so likely no such person exists who can run that job without authorization, and even if they did, they would be immediately fired afterwards, and possibly subject to criminal prosecution for violation of their user's privacy, depending on jurisdiction.
But that request is not going to make it through normal channels. And most of the customer data (especially PII) is very tightly controlled, so likely no such person exists who can run that job without authorization, and even if they did, they would be immediately fired afterwards, and possibly subject to criminal prosecution for violation of their user's privacy, depending on jurisdiction.