Adm. (ret.) Michael Mullen (left) former Chairman Joint Chiefs of Staff and his wife Deborah watch as their son Cmdr. John Mullen takes command of Navy Talent Acquisition Group (NTAG) Ohio River Valley during his change of command ceremony Friday. NTAG Ohio River Valley’s mission is to man the Navy fleet with the highest quality Sailors and maintain the Navy’s unchallenged worldwide maritime superiority and ability to win wars, deter aggression and maintain freedom of the seas.