FILE - In this Nov. 9, 2011 file photo, Transportation Security Administration (TSA) Administrator John Pistole testifies on Capitol Hill in Washington. Pistole on Thursday, March 14, 2

 

              FILE - In this Nov. 9, 2011 file photo, Transportation Security Administration (TSA) Administrator John Pistole testifies on Capitol Hill in Washington. Pistole on Thursday, March 14, 2
FILE - In this Nov. 9, 2011 file photo, Transportation Security Administration (TSA) Administrator John Pistole testifies on Capitol Hill in Washington. Pistole on Thursday, March 14, 2013 told lawmakers he stands by his plan to allow passengers to carry small knives onto planes despite a growing backlash against the proposal. (AP Photo/J. Scott Applewhite, File)