Comment by gruez

>By the early 2000s, the agency ceased running certain types of operations [...] The Singaporeans had developed a database that incorporated real-time flight, customs, hotel and taxicab data. If it took too long for a traveler to get from the airport to a hotel in a taxi, the anomaly would trigger an alert in Singaporean security systems

I don't get it. Why don't the agents act normal until after they got to the hotel?