What's he doing?
He's checking in his luggage.
What's she doing?
She's showing her passport-
Who's he?
He's the security guard.
Who's she?
She's a flight attendant.
What's he doing?
He's getting his boarding card.
What are they doing?
They're boarding the plane.
What's this?
It's luggage.
What's he doing?
He's going through security.
Who's he?
He's a passenger.
Who's he?
He's a pilot.
What's he doing?
He's going to his/the gate.
