Some actions like whistling or yawning can cause passengers to be detained at security gates in US airports.
The US Transportation Security Administration (TSA) said that airport security teams often use observation techniques (SPOT) to screen passengers at customs.
In particular, actions such as whistling or yawning repeatedly when going through security can cause you to be detained for more thorough inspection. In addition, the habit of clearing throat or blinking too quickly can also cause passengers to be detained at the airport.
Repeated yawning can cause passengers to be detained at the airport.
Because security officers may think you are showing signs of stress or fear, nervousness when trying to hide something.
Besides, some gestures such as frequently looking down, pale face because of no makeup, clothes that are not suitable for the weather and circumstances… can also cause problems for passengers at the customs gate.
Some people think that going through security close to departure can make the security staff sympathetic and skip many procedures so you can get on the plane on time. However, the above concept is completely wrong because at this point you may be classified as a passenger to note. You may even be late for your flight when you have to answer questions from the security team.
New aviation law in the US requires passengers to provide DNA samples in case they are detained at airport security. If you refuse, you could face charges from the court.
In order not to face trouble when going through airport security, passengers should be at the airport about 2-3 hours before departure time. You can wear whatever you like, but don’t be too different. In addition, it is necessary to carefully study the regulations of the airlines to avoid bringing easily recalled items in hand luggage.