"Foreign Policy Journal has learned that senior executives of a major U.S. international corporation may have been warned to leave New York on September 11, 2001.
According to an inside source, one of the senior executives of the corporation told him beforehand that “something big” was going to occur and so other corporate executives would be travelling out of New York.
(...)
When the managing director of the overseas Warner Bros. office passed away, the individual who spoke with the Journal was contacted by the senior executive from L.A. about the plans for the memorial service. Senior executives from the company would attend, including from the Warner Bros. parent corporation, Time Warner, headquartered in New York.
When he answered that one of the potential dates for the service was September 11, he was told that would be no good because “something big is happening that day” and the top executives from the New York office would all be travelling out of the city.
When asked further about this big event, the executive replied that it was a confidential matter and disclosed no further details, except to say that it was “not corporate”.
The source told the Journal, “I had no reason to think that the ‘event’ could be anything more than perhaps a junket, an out of town think tank exercise or whatever – I remember that these possibilities ran through my mind.”
But after 9/11, thinking back upon the conversation, he grew more curious and tried to ascertain where the board members had been that day. They had indeed been out of New York, he says, travelling not to one location, but each to their own destination. Destinations included overseas locations such as Paris, London, and Amsterdam."
http://www.foreignpolicyjournal.com/articles/2008/11/03/senior_executives_warned_911.htm