Who is next command after vice president?

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1. Vice President of the United States

2. Speaker of the House

3. President pro Tempore of the Senate

4. Secretary of State

5. Secretary of the Treasury

6. Secretary of Defense

7. Attorney General

8. Secretary of the Interior

9. Secretary of Agriculture

10. Secretary of Commerce

11. Secretary of Labor

12. Secretary of Health & Human Services

13. Secretary of Housing & Urban Development

14. Secretary of Transportation

15. Secretary of Energy

16. Secretary of Education

17. Secretary of Veterans' Affairs

18. Secretary of Homeland Security