On 15 June, however, she experienced another potentially fatal adventure. At dusk, "Triumph" was patrolling north of Kerama Retto when an enemy torpedo bomber executed a near-perfect run on her. Initially, the plane was thought to be friendly, though the radarman continued to track the unidentified aircraft just in case. The pilot lined his plane up with the moon, made a well-executed approach, and launched his torpedo. Two sharp-eyed sailors on board "Triumph" spied the torpedo splash, raised the alarm, and the warship immediately went hard to starboard to evade the torpedo. It passed in her wake, a scant 30 yards astern. Darkness precluded any real antiaircraft response, so "Triumph" resumed her patrols. Three days after that attack, the minesweeper put into Kerama Retto for supplies and upkeep.