The surface warfare insignia is a military badge of the United States Navy which is issued to U.S. Navy personnel who are trained and qualified to perform duties aboard United States surface warships. There are presently four classes of the surface warfare pin, being that of line, staff, special operations, and enlisted. The line and enlisted surface warfare badges may be earned by United States Coast Guard personnel assigned to Navy commands. The various badge types are as follows: Surface warfare officer The surface warfare officer insignia is the first milestone qualification an eligible commissioned officer may receive in surface warfare. This device is commonly called the "SWO pin" in the U.S. Navy. Those receiving the pin must qualify as officer of the deck (both underway and in port), small boat officer, combat information center watch officer, and must be trained in shipboard engineering, naval history, and damage control. For further, enterprise-level training, officers will attend Surface Warfare Officers' School (SWOS) in Newport, Rhode Island between all sea tours. The surface warfare officer badge is typically a prerequisite for tactical action officer (TAO) training. Junior officers, typically Ensigns, assigned to the surface warfare community are known as "unqualified" or "non-quals" until they receive qualification as a Surface Warfare Officer and receive the SWO pin. Surface line personnel who are not yet qualified have the 1160 officer designator: once qualified they receive the 1110 designator for Regular Navy Officers and 1115 for Navy Reserve Officers. Prior to 2018, junior officers were granted 24 months to qualify as Surface Warfare Officers; failing to do within the time period so meant either separation from the service or applying to transfer to another warfare community. The collisions involving the USS John S. McCain (DDG-56) and the USS Fitzgerald (DDG-62) brought about a change in qualification standards. Unqualified junior officers now have no time limit to qualify within the two and a half years of their first tour, and now must qualify solely before they transfer to their next command. Failing to qualify prevents the officer from transferring. Officers who are separated from the SWO community are known as "SWO non-attains" and this designation is entered into the officer's permanent military record. The Surface Warfare Officer pin was designed to depict the traditional and typical elements of naval service: waves breaking before the bow of a ship overlaid on crossed U.S. Navy commissioned officer's swords,