A TikToker has revealed what flight attendants are "really doing" when they greet passengers on an airplane.
Kat Kamalani - who works as a flight attendant - has shared some rarely-known trivia of what really happens before an aircraft takes off.
Taking to TikTok, Kamalani explained why flight attendants often greet travelers with a big smile on their face - and the reason is probably not what you think.
She said in the video: "Have you ever walked on the plane and seen the flight attendants standing here greeting you, or the flight attendants walking up and down the aisle? Well, I'm about to tell you what we're really doing.
"When you walk on the plane and see our happy, smiley face, we're actually looking you up and down and trying to find our able-bodied people. So these are people who are going to help us in an emergency."
Kalamani says that flight attendants often keep their eyes peeled for military personnel, firefighters, nurses, and doctors on board the aircraft.
Explaining the reason in her TikTok, she said this is "in case of a medical emergency or we're going to land the plane or there's a security breach, we know who's on our plane and who can help us. But, we're also looking out for one more thing.
"Besides looking for things that don’t belong on the plane, like a box of liquid, we're looking for human trafficking. It happens a lot in the industry and our passengers' safety is our number one priority, so we're just looking for things that look off."
She captioned the video: "You would never guess the last part... #secretsrevealed #traveler #momsontiktok #flightcrew #travelhacks."
The video became an instant viral hit, racking up more than 4 million views at the time of writing.
The video forced some social media users to think back to a time when they have experienced flight attendants being extra cautious.
One person wrote: "Omg when I go back to Australia from UK I’m always in floods of tears, the staff always take [me] aside and question me. They probably think I’m being trafficked."
Another added: "Omg I never knew that!"
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