FIVE ZERO TACTICAL IS OWNED AND OPERATED BY A FIRST RESPONDER A laser-etched dual-sided sturdy and reliable black aluminum card with the Standard Field Sobriety Tests (SFST) instructions engraved on the front and back. At the size of a credit card, this card contains the information you need at the time you need it while still being easy to read. All of our products are First Responder Tested and Approved. Interactive50 LLC / Five Zero Tactical is an Indianapolis, Indiana first responder-owned company that specializes in business and creative consulting.