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.