Can I buy a MetroCard at JFK?

Related questions

1. Why is JFK airport called JFK?
2. When should I arrive at JFK?
3. What happens if I miss my connecting flight?
4. Do I have to recheck my luggage when flying with multiple airlines?
5. Do I need to get my luggage on a connecting flight?
6. How early should you get to JFK for international flight?
7. Can I walk between terminals at JFK?
8. Are the terminals at JFK connected?
9. How much is airport parking at JFK?
10. Which airport is the best airport in the world?

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11. #jamaica
12. #system
13. #turnstiles
14. #where
15. #airtrain