Coming on the heels of the plots uncovered in Dallas, Springfield, Illinois, New York City, Denver, and elsewhere, this cannot be taken lightly. "Minn. Man Wanted For Threats Arrested In Chicago," from [1] WCCO, October 23 (thanks to Melisa):

CHICAGO (WCCO) ― Ismail Alqawasmi, 36, of Richfield, Minn., was arrested at O'Hare International Airport on Oct. 23, 2009, after he flew in from Amman, Jordan, and a customs official conducting a name check found an active warrant for "terroristic threats."

A Minnesota man was arrested at O'Hare International Airport Thursday night after a customs official discovered he was wanted on a warrant for "terroristic threats."

Chicago police said Ismail Alqawasmi, 36, of Richfield, Minn., was arrested at 8 p.m. at O'Hare after he arrived from Amman, Jordan on a Royal Jordanian Airlines flight....

Details about the alleged threats were not immediately available....