Related Experiment Video
Updated: Aug 19, 2026

Spotlighting Customers' Visual Attention at the Stock, Shelf and Store Levels with the 3S Model
Published on: May 24, 2019
Abstract:
On the day of the terrorist attacks on New York's World Trade Center, 1,779 employees of Marsh & McLennan Companies had office space in the twin towers, and another 129 were visiting that day. From his office at MMC headquarters in midtown, CEO Jeffrey Greenberg watched in horror as the second plane hit. By the time the towers fell, he had gathered a team of his colleagues to begin to outline how the company would respond. In this first-person account, Greenberg relates what it was like to manage through the unimaginable. The needs of MMC's people, and the families of employees who perished, took top priority. In the midst of chaos and unforeseeable problems, Greenberg and his colleagues improvised ways of communicating and assembled a broad-based program of support. Help appeared from all sides, from people of various ranks, titles, and functional expertise within MMC as well as past chairmen, outside directors, and retired executives. An emergency communications center was immediately set up at MMC headquarters and became a centralized location for messages and information and a memorial to colleagues lost in the attacks. The company arranged for grief counselors and established a family assistance center and a Family Relationship Management Program for those who had lost MMC employees. It has also provided families with access to long-term psychological and financial counseling. At the same time, Greenberg offers lessons about leadership, company culture, and adaptability. He and his colleagues held responsibility for a business beset by operational destruction and financial losses and facing dramatically changed market conditions. Their resolve was not simply to keep it on course but to come back stronger than ever.
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