MAYPORT, Fla. (Feb. 18, 2016) – Capt. Sam Hancock, Commodore Destroyer Squadron FOUR ZERO (center) explains to Peruvian Rear Adm. Edwin Zegarra, Chief of the General Staff for the Peruvian Navy Commander of the Pacific Operations (right) about the structure of his chain of command during an office call on Feb. 18, 2016. (U.S. Navy photo by Mass Communication Specialist 1st Class Catherine Bland/released)