Who killed Lt singer on Jag?

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Tags

1. #members
2. #brother
3. #sergei
4. #loren
5. #investigation
6. #called
7. #commander
8. #launches
9. #informs
10. #admiral
11. #revealed
12. #calls
13. #chegwidden
14. #investigate
15. #singer
16. #inform
17. #murder