How long is a secret clearance good for?

Related questions

1. Is an interim clearance considered active?
2. How do I get Naci clearance?
3. What should I wear to a security clearance interview?
4. How long does a secret clearance last?
5. How do I check the status of my security clearance investigation?
6. How much does it cost to get a secret clearance?
7. What replaced Jpas?
8. How long does a clearance stay active?
9. How long does it take to get a public trust clearance?
10. How long does security clearance adjudication take?

Tags

1. #years
2. #required
3. #randomly
4. #however
5. #reinvestigated
6. #personnel
7. #secret
8. #clearance
9. #every
10. #reinvestigation
11. #confidential
12. #periodic
13. #civilian
14. #before
15. #military