BUSAN, South Korea (Feb. 25, 2023) Rear Adm. Mark Schafer, commander, Naval Forces Korea, looks through the periscope during a tour of the Los Angeles-class fast-attack submarine USS Springfield (SSN 761) in Busan, Republic of Korea. Springfield is forward-deployed to Guam and routinely operates in the U.S. 7th Fleet area of operations, conducting maritime security operations and supporting national security interests. (U.S. Navy photo by Yeoman 2nd Class Andre Pearson)