Submarine Swim Sailors assigned to Los Angeles-class fast-attack submarine USS Olympia participate in a swim call at sea in the Pacific Ocean, July 31, 2018. Navy photo by Senior Chief Petty Officer Vien Nguyen SHARE IMAGE: Download Image: Full Size (0.93 MB) Photo By: Fire Control Technician Senior Chief Vien Nguyen VIRIN: 180731-N-KC128-0003C.JPG Photo Gallery