The FAA has issued another TFR notam establishing a 2-nm flight restriction from the surface up to but not including FL180 in Manhattan, New York, beginning January 31, 2002, at 7 a.m. through February 4, 2002, at 6:59 p.m. Centered on the Waldorf Astoria Hotel, this TFR is located within La Guardia Class B airspace, just to the northeast of the existing ground zero TFR. All flights are prohibited within the TFR area unless authorized by ATC. AOPA has learned that the restrictions have been implemented to provide an extra layer of security surrounding the World Economic Forum's annual meeting to take place later this week. Meeting highlights are centered on global economy and security.