On March 19, the Department of Homeland Security’s CISA (Cybersecurity and Infrastructure Security Agency) published guidance to state, local, tribal and territorial jurisdictions and the private sector defining essential critical infrastructure workers imperative to respond to the COVID-19 pandemic.   That day, the State of Pennsylvania became the first state to lock down all physical businesses not deemed to be “life-sustaining” or “essential.” It is reasonable to assume that other states ...