Why is Calgary airport called YYC?

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Tags

1. #calgary
2. #iconic
3. #history
4. #official
5. #brand
6. #throughout
7. #airport
8. #calgarians
9. #businesses
10. #enshrined
11. #language
12. #international
13. #grown
14. #permanently
15. #everyday
16. #symbolize
17. #support
18. #serve