On this day in conspiracies

Harold Dahl, working a harbor patrol boat salvaging drifting logs in Puget Sound, later says that near Maury Island (a peninsula of Vashon Island, across the water from Tacoma) six large doughnut-shaped craft appeared overhead. He claims one seemed in distress and dropped a shower of thin white metal and hot, dark slag onto his boat, damaging it, burning his teenage son's arm, and killing the family dog.