Abstract
This article sites several post-attack, national surveys indicating negative mental health consequences as a context for considering the recent mobilization of the Green Cross Projects (GCP) in New York's lower Manhattan area. The GCP is a humanitarian, disaster mental health organization that provides crisis intervention to organizations (public and private) affected by traumatic events. After noting the history, purpose, and structure of the GCP, the article describes its recently completed mobilization beginning with the invitation by a large, local service employee union. Based on the invitation an agreed upon mission was established with six measurable objectives. This is followed by a description of what happened, who and how many were served and trained. The final section of the paper discusses the lessons applied from traumatology and the lessons learned that should be applied to future community-based, organizational assistance following a major disaster.