ICS became a national model for command structures at a fire , crime scene or major incident . ICS was used in New York at the first attack on the World Trade Center in 1993 . On 1 March 2004 , the Department of Homeland Security , in accordance with the passage of Homeland Security Presidential Directive 5 ( HSPD-5 ) calling for a standardized approach to incident management amongst all federal , state , and local agencies , developed the National Incident Management System ( NIMS ) which integrates ICS . Additionally , it was mandated that NIMS ( and thus ICS ) must be utilized to manage emergencies in order to receive federal funding
attack
1993 World Trade Center bombing
Incident Command System