What does a blue star in the window mean?

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Tags

1. #white
2. #during
3. #operations
4. #border
5. #united
6. #defined
7. #officially
8. #armed
9. #serving
10. #period
11. #forces
12. #represents
13. #military
14. #family
15. #hostilities
16. #field
17. #states
18. #banner
19. #member