161229-N-QE566-006 PEARL HARBOR (Dec. 29, 2016) Capt. David A. Bretz, left, relieves Capt. Charles A. Johnson as Commander, Destroyer Squadron 31 (DESRON 31) during a change of command ceremony on Joint Base Pearl Harbor-Hickam. Bretz was previously assigned as Deputy Commodore of DESRON 31. Johnson will be reporting to Commander, Sixth Fleet in Naples, Italy. (Photo by Mass Communication Specialist 1st Class Corwin Colbert/Released)