Cybersecurity and Infrastructure Security Agency (CISA), Department of Homeland Security (Director Jen Easterly), Guidance on the Essential Critical Infrastructure Workforce, Version 4.1 (Aug. 10, 2021) (Ex. SEC-18-001)
Governor JB Pritzker, Executive Order 2021-20 (COVID-19 Executive Order No. 87) (Aug. 26, 2021) (Ex. SEC-18-042)
