SEASON 3 COMPETITOR AND DIESEL MECHANIC QUINCEY RETURNS TO GUIDE THE CREWS THROUGH A SERIES OF AUTO SERVICE “That’s a Safety Hazard” – Season three competitor and diesel mechanic Quincey Walker returns to guide the crews through a series of auto service challenges on TOUGH AS NAILS, Wednesday, Jan. 18 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and available to stream live and on demand on Paramount+. Phil Keoghan is the creator, host and executive producer/showrunner.