^Gilmore v. Gonzales. FreeToTravel.org. UNITED STATES DISTRICT COURT NORTHERN DISTRICT OF CALIFORNIA. 2002-07-18 [2015-10-24]. (原始内容存档于2016-03-04). Southwest... clerk tore up the boarding pass, printed out another one with a checkerboard pattern on it... you become selected for secondary screening... (页面存档备份,存于互联网档案馆)