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Thread: Security screening while transferring
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Old Jan 7, 2020 | 8:47 am
  #5  
Often1
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Join Date: Aug 2010
Location: DCA
Programs: UA US CO AA DL FL
Posts: 50,253
Not worth generalities.

1. Could be due to concerns about security procedures at the origin.
2. Coule be due to mixing passengers from "clean" and not clean departure points.
3. Could be due to architecture, e.g. switching terminals without a secure passage, bus, or train.

Thus, the question to OP is what specific airports and carriers?
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