Ronald U. Swanson is a suspected terrorist. He has previously participated in anti-government activities and openly declares his hatred for the government bureaucracy. You believe he is plotting to conduct car bombs anticipated to explode in multiple jurisdictions simultaneously. You think this could happen within the next 24 hours. You want to obtain his location information and phone records for the past 10 days in the hopes of identifying his potential base of operations.

What is required legally to obtain the noted records and why? By that I mean: what type of legal authority is required (if any) and what is the associated legal standard? What relevance does a national security investigation have here?

Does the Fourth Apply to a domestic terrorism investigation? What if Swanson was from France, rather than Pawnee, Indiana?