USS Helena (SSN-725) is a Los Angeles-class fast-attack submarine commissioned on July 11, 1987. Named for Helena, Montana, she has served with distinction across the Pacific and Atlantic, conducting missions in support of national security. Los Angeles-class submarines formed the backbone of the Cold War undersea fleet, and Helena carried that proud tradition through more than two decades of service. This mug honors her crew and their quiet, vital work beneath the waves.