170106-N-KC128-0020 PEARL HARBOR (Jan. 6, 2017) Sailors assigned to Naval Submarine Training Center Pacific look on during a change of command ceremony at Joint Base Pearl Harbor-Hickam. Capt. Andrew Hertel relieved Capt. Michael Martin as commanding officer of Naval Submarine Training Center, Pacific. (U.S. Navy photo by Mass Communication Specialist 1st Class Daniel Hinton/Released)