181207-N-TP834-0067 SAN DIEGO (Dec. 7, 2018) Sailors assigned to the guided-missile destroyer Pre-Commissioning Unit (PCU) Michael Monsoor (DDG 1001) man the rails as the ship transits San Diego Bay. The future USS Michael Monsoor is the second ship in the Zumwalt-class of guided-missile destroyers and will undergo a combat test period. The ship is scheduled to be commissioned into the Navy Jan. 26, 2019, in Coronado, Calif. (Photo by Mass Communication Specialist 1st Class John Philip Wagner Jr./Released)