 He served as executive officer of 's Gold Crew before taking command of in March 1991.In 1992, he was awarded the Vice Admiral James Bond Stockdale Award for Inspirational Leadership by the commander of United States Pacific Fleet.Following his command at sea, Greenert served as commander of Submarine Squadron 11, and Commander, Submarine Forces Pacific (COMSUBPAC) Representative West Coast from July 1996 to June 1997.