Types.

Airports bring in all kinds of people.
People that don't want to go where they're destination is. People that didn't want to come back from where they were.
People still trying to find what they want out of life. People who are happy.
People with no luggage. People with too much luggage.
People that don't want to say good bye. People that don't have problems saying good bye.
People that have one to many matching articles of clothing.
People sprinting. People crawling.
Pregnant ladies. Ladies that look pregnant.
People with coffee. People that need coffee.
People using pay phones. People that have three cell phones.
People buying things. People selling things.
People who don't speak english. People who fake accents to avoid people trying to sell them something (a;sldkfjasdflakj)
People who are confident. People who aren't.
People with tattoos. People with with perfect complexions.
People who like John Mayer. People who hate John Mayer
All colors, shapes, religions.
People with iPhones. People who still have Nokias.
Old. Young.
Ghetto. Preppy.
People who can rock a V-neck. People who don't ever need to look at a V-neck again.
People traveling for business. Or for vacation. Or for family. Or for a change.
Couples that match. Couples that don't.