We continue what we started in Episode 3 with the discussion of the 1984 Toluene Tank Explosion that took the life of HAZMAT Engineer Ricky Pearce. Engineer Pearce's LODD takes us into analyzing today's newest unknown: lithium ion batteries and their storage facilities. We also touch on how the firefighting industry has evolved in ways (such as the clean cab initiative) that lower our risk to health hazards.

We continue these talks with our panel from Episode 3: Captain Tom Bates (Ricky's Captain that day), Captain Chris Pearce (Ricky's son and current Phoenix FD Captain), Retired Phoenix AC Ron Jamison, Surprise, AZ Fire Chief Tom Abbott, and NFFF's own, Chief John Tippett.