NIMS Compliance: What training do I need? âNIMS Complianceâ is required only for those agencies/jurisdictions that wish to apply for any Federal preparedness. grants (Homeland Security, Assistance to Firefighters Act, etc.) However, since ICS is used across the country by. response agencies for just about all incidents, it is good training to have. The Federal guidance for NIMS/ICS training has several recommendations, and they can often be confusing.