In 1981, observance of Tisha B'Av coincided with the anniversary of the atomic bombing of Nagasaki by the U.S. during World War II. The occasion was marked by NJA with traditional observance of Tisha B'Av near the White House and the Soviet Embassy. These were buildings symbolic of the nuclear super-powers, thus marking the shared symbolism of the potential danger of world-destruction. In 1984, NJA chapters sponsored scores of Sukkat Shalom (Shelter of Peace) and Rainbow Sign celebrations, linking traditional Jewish observances with the call for nuclear disarmament. NJA built a sukkah in Lafayette Park across from the White House in order to draw attention to their anti-nuclear organizing.