NATIONAL MARITIME CYBERSECURITY PLAN ANNEX D TABLE OF ACRONYMS USED ACRONYM MEANING CISA Cybersecurity and Infrastructure Agency CISA 2015 Cybersecurity Information Sharing Act of 2015 CSIS Center for Strategic International Studies COVID-19 Coronavirus Disease of 2019 DCS Distributed Control Systems DHS Department of Homeland Security DOD Department of Defense EMS Electromagnetic Spectrum E.O. Executive Order FEMA Federal Emergency Management Agency FBI Federal Bureau of Investigation GPS Global Positioning System IC Intelligence Community ICS Industrial Control Systems IMO International Maritime Organization IoT Internet of Things ISAC Information Sharing and Analysis Center ISM International Safety Management ISPS International Ship and Port Facility Security IT Information Technology MARAD Department of Administration A-15 Transportation Maritime