security screening checkpoint
·2,447,543篇论文数据，部分数据来源于NoteExpress
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What I also can say is that every passenger that passes security checkpoints is subject to many layers of security, as we all know, including a thorough physical screening at the checkpoint as well as other measures.
WHITEHOUSE: Press Briefing
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Screening procedures drew 1, 960 complaints since January 2010, and security checkpoint processing time got 2, 484 complaints since then.
CNN: How much do we really hate the TSA?