We set forth very clearly in our data use policy the circumstances under which we might provide information to a government. Typically that is in a situation where we would receive a government request, and we would apply very strict scrutiny to that request to ensure that it's not overly broad and to ensure that it is compliant with the law.
In rare cases we make clear in our terms, because we care so much about protecting people, that if we believe somebody's life is in danger or in physical harm, then we will provide information to law enforcement authorities as necessary to protect people.