as dangerous.
Some travel behaviors are more likely to trigger this designation. Last-minute ticket purchases are one common reason. One-way international flights can also draw more attention, especially if they involve routes or regions considered higher risk. Paying cash for airfare may also increase the chance of being flagged. A traveler with little or no established travel history may sometimes be selected as well. At the same time, the system also includes a random element. This unpredictability is intentional, since it helps prevent anyone from learning how to avoid the
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