The TSA cannot continue diverting resources into underused PreCheck lanes while most of the traveling public suffers in unnecessary lines.

运输安全管理局不能继续将资源分散到未被充分利用的预检通道，而同时，大多数旅客却要排着不必要的队。

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PreCheck is supposed to be a win-win for travelers and the TSA.

预先检查应该是旅客和运输安全管理局的双赢之举。

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Kip Hawley is a former head of the U.S. Transportation Security Administration, or TSA,which is charged with screening airline passengers and luggage.

VOA: standard.2009.12.30

Former TSA Administrator Kip Hawley says Americans must weigh privacy concerns against the need for safe travel.

VOA: standard.2009.12.30

Most of the few U.S.airports that possess body scanning capability are using the technology for secondary screening of passengers who warrant closer examination by TSA officers.

VOA: standard.2009.12.30

The TSA maintained that the backscatter machines, manufactured by Rapiscan Systems, were safe and effective.

CNN: TSA removes body scanners criticized as too revealing

Backscatter machines could return one day if the company develops required software, the TSA has said.

CNN: TSA removes body scanners criticized as too revealing

The TSA did not give a new date for the policy to take effect.

CNN: U.S. to keep restriction on small knives on planes for now