What is the fastest unmanned aircraft?

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Tags

1. #pacific
2. #record
3. #speed
4. #sound
5. #world
6. #november
7. #altitude
8. #meters
9. #nearly
10. #think
11. #unmanned
12. #ocean
13. #thinking
14. #still
15. #title
16. #holds
17. #times
18. #again
19. #owned
20. #fastest
21. #aircraft