<Tr> <Td> National Security Advisor </Td> <Th> Darren Kahn (Cotter Smith) </Th> <Td> 2013--2015 </Td> </Tr> <Tr> <Th> Craig Sterling (Julian Acosta) </Th> <Td> 2015--2015 </Td> </Tr> <Tr> <Th> ADM (Ret .) Ellen Hill (Johanna Day) </Th> <Td> 2016--</Td> </Tr> <Tr> <Td> Chairman of the Joint Chiefs of Staff </Td> <Th> ADM Ellen Hill, USN (Johanna Day) </Th> <Td> 2013--2015 </Td> </Tr>

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