What is this?
passport
Who are they?
pilot
What is this?
aisle seat
What is this?
conveyor belt
What is this?
x-ray machine detector
What is this?
boarding pass
What is this?
cabin crew/flight attendant
What is this?
metal detector
What is this?
scale
What is this?
runaway
What is this?
boarding
What is this?
layover/stopover