The lead agency for homeland security at the federal level is the Department of Homeland Security (DHS). This agency mandates training for personnel at all levels of government, as well as for several critical professions in the private sector. The program responsible for coordinating training is the National Domestic Preparedness Consortium (NDPC).
https://www.homelandsecurityedu.org/training/
The following training is developed and conducted with support from the U.S. Department of Homeland Security (DHS): Course Description: This course is intended for U.S. military and/or Department of Defense personnel assigned to conduct cyber vulnerability evaluations of DOD critical infrastructure.
https://inl.gov/critical-infrastructure-protection-training/
MISSION The Washington Emergency Management Division leads and coordinates mitigation, preparedness, response and recovery in Washington State to minimize the impact of disasters and emergencies on the people, property, environment and economy.
https://mil.wa.gov/emergency-management-division
This template provides a structure for formulating a COOP Plan according to Department of Homeland Security (DHS) Headquarters COOP Guidance Document, dated April 2004. This template is designed to accompany the Continuity of Operations Template Instructions, which consists of general guidance and sample language for reference.
https://dds.dc.gov/publication/coop-plan-blank-template
So, the Department of Homeland Security is a top-level department which contains a bunch of agencies, including (but not limited to): The FBI is the agency for domestic intelligence and law enforcement (the CIA does foreign intelligence). The FBI falls under the Department of Justice.
https://www.lcpdfr.com/forums/topic/73480-whats-the-difference-between-fbi-and-dhs/
doc for "department of employment security washington".(Page 1 of about 19 results)