ATLANTIC OCEAN (Sept. 12, 2020) A U.S. Navy destroyer is viewed through a periscope aboard the Los Angeles-class submarine USS San Juan (SSN 751) in support of Exercise Black Widow. San Juan participated in the exercise which is being conducted in the Atlantic to advance theater undersea warfare in a multi-domain environment. Our submarines, surface ships, ASW capable aircraft and other undersea capabilities work together in a dynamic environment to prepare our teams for challenging operations against near-peer competitors. (U.S. Navy photo by Mass Communication Specialist Seaman Jimmy Ivy III)