Kali Fencl and Daniel Schwalbe sat down with Lesley Carhart, a seasoned incident responder specializing in Operational Technology (OT) cybersecurity at Dragos, in person at BlackHat USA 2024. Lesley shares their journey, from their unique background in avionics and electronics to becoming a leading expert in the field. We explore the evolving landscape of OT cybersecurity, the challenges of protecting legacy systems, and the critical importance of building strong relationships between cybersecurity teams and operational engineers. Lesley also discusses the realities of incident response in industrial environments, the misconceptions surrounding OT security, and the human-centric approach needed to tackle these complex issues. Tune in to learn about the delicate balance between innovation and safety in protecting the critical infrastructure that powers our world.