LT Peterson gives a presentation on personal protective equipment (PPE) to new firefighters. He emphasizes that PPE is the "last line of defense" and reviews the various pieces of issued PPE - helmets, SCBA, turnouts, boots, gloves, and hoods. He stresses the importance of inspecting PPE before each shift and outlines criteria for when equipment requires repair or replacement. LT Peterson also discusses fitness, mental preparedness, nutrition, and the importance of crew coordination for firefighter safety.