If conditions warrant on your floor, you may wish to start an orderly evacuation." A package deliverer told reporters he heard the first crash and as he evacuated he heard: "The building is secure. The safest place is inside; stay calm and do not leave." Others who ignored the message were met with officials at the lobby who told them to return to their respective floors. In a recorded radio conversation about two minutes after the first plane hit, the director of the South Tower stated: "I'm not going to do anything until we get orders from the Fire Department or somebody." This was done in order to avoid overcrowding on the plaza and concourse levels, which was feared would slow the evacuation and rescue operations in the North Tower. Despite the announcements, thousands of people continued to evacuate the South Tower. In the South Tower between the 78th floor Skylobby and the Observation Deck on the 107th and 110th Floors, there were an estimated 2,000 employees, including 1,100 on the floors occupied by AON Insurance (the 92nd and the 98th through 105th). One of AON's executives, Eric Eisenberg, initiated the evacuation of their floors within moments of the impact of Flight 11; however, the company still lost 175 employees who either chose to stay behind or simply failed to get below the impact zone in the time they had before the plane hit. Similar evacuations were carried out on the floors occupied by Fiduciary Trust, on the 90th, 94th–97th floors, as well as in the offices of Fuji Bank (on floors 79–82), CSC (floor 87) and Euro Brokers on floor 84, which occupied the floors directly above the 78th floor Skylobby. Executives such as Eisenberg instructed their employees to take the stairs down to the 78th floor Skylobby, where they could take an express elevator to the ground level and exit the building. A particularly successful pre-impact evacuation was carried out by Rick Rescorla, head of security at Morgan Stanley. He personally defied an order to stay put and evacuated nearly all of the firm's 2,700 employees in the South Tower moments after the crash of Flight 11. Many were aided in their evacuation by other building occupants such as Welles Remy Crowther, who was extremely identifiable due to the red bandanna around his mouth, and who helped guide groups of evacuees to safety. Within a window of 17