200601-N-NU281-1039 PEARL HARBOR (June 1, 2020) Sailors assigned to the Los Angeles-class fast-attack submarine USS Chicago (SSN 721) prepare to load Encapsulated Harpoon Certification Training Vehicles (EHCTV) onto the submarine. EHCTV testing is required in order for the submarine to carry and employ tactical Harpoon missiles. The Harpoon system provides commanders with lethal all-weather anti-ship capability to rapidly engage targets at long range. (U.S. Navy photo by Mass Communication Specialist 2nd Class Justin R. Pacheco/Released)