From the Presentation: " ICS [Industrial Control Systems] are integral to critical infrastructure (CI) operations;  Successful exploitation of ICS can result in not only data corruption and exfiltration, but significant physical consequences;  Different risk factors and security constraints come into play in an ICS environment;  Managing ICS risk requires specific information technology (IT) and operational technology (OT) technical expertise[.]"
U.S. Cybersecurity and Infrastructure Security Agency: https://www.cisa.gov/
12th Chemical Sector Security Summit. New Orleans, LA. July 16-18, 2019