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EXCEL - IDEA: XBRL DOCUMENT - Knight-Swift Transportation Holdings Inc.Financial_Report.xls
EX-31.2 - EXHIBIT 31.2 - Knight-Swift Transportation Holdings Inc.c18701exv31w2.htm
EX-10.2 - EXHIBIT 10.2 - Knight-Swift Transportation Holdings Inc.c18701exv10w2.htm
EX-31.1 - EXHIBIT 31.1 - Knight-Swift Transportation Holdings Inc.c18701exv31w1.htm
EX-10.1 - EXHIBIT 10.1 - Knight-Swift Transportation Holdings Inc.c18701exv10w1.htm
10-Q - FORM 10-Q - Knight-Swift Transportation Holdings Inc.c18701e10vq.htm
EXHIBIT 32.1
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report on Form 10-Q of Swift Transportation Company (the “Company”) for the quarter ending June 30, 2011, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, the undersigned, certify, to the best of our knowledge, that:
  (1)  
The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
  (2)  
The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
             
    SWIFT TRANSPORTATION COMPANY,    
    a Delaware corporation    
 
           
 
  By:   /s/ Jerry Moyes
 
Jerry Moyes
   
 
      Chief Executive Officer and Director    
 
           
    August 9, 2011    
 
           
 
  By:   /s/ Virginia Henkels
 
Virginia Henkels
   
 
      Executive Vice President and Chief Financial Officer    
 
           
    August 9, 2011