1:00 a.m. September 11, 2001: Hours before Attacks, San Francisco Mayor Receives Warning

Eight hours prior to the terrorist attacks, San Francisco Mayor Willie Brown receives a warning from his “security people at the airport,” advising him to be cautious in traveling. [San Francisco Chronicle, 9/12/2001] Later reports will claim that this is because someone saw the State Department warning of September 7 (see September 7, 2001), which focused on the threat to military personnel in Asia. Brown is scheduled to fly to New York the next morning. [US Department of State, 9/7/2001; San Francisco Chronicle, 9/12/2001; San Francisco Chronicle, 9/14/2001] The source of the warning, and why it is personally issued to Brown, will remain unknown.