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Thread: TSA Precheck Not Valid Unless SouthWest Opts You In?
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Old May 21, 2014, 2:06 pm
  #12  
rsteinmetz70112
 
Join Date: Jul 2013
Posts: 5,813
Originally Posted by coltonatx
KTN - known traveler number
What is WN?
Airline code for Southwest.
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