PACIFIC OCEAN (Aug. 14, 2021) Lt. j.g. Raymond Gerrety looks through a periscope aboard the Los Angeles-class fast-attack submarine USS Chicago (SSN 721) to prepare for a sinking exercise on the decommissioned guided-missile frigate Ingraham (FFG 61), Aug. 15, 2021. The exercise synchronized joint, multi-domain, multi-axis fires with near simultaneous times on target to sink the hulk. (U.S. Navy photo by Mass Communication Specialist 2nd Class Greg Hall)