Watching the recent digital restoration of Bruce Conner’s thirty-six-minute film Crossroads, 1976, which depicts 1946 footage of the first underwater atomic bomb test at Bikini Atoll, is a vertiginous experience of telescoping back in time. Conner obtained this government-shot film from the U.S. National Archives and with minimal interventions (editing and, most notably, the addition of music), turned it into a resonant meditation on the apocalyptic sublime, rendering the familiar nuclear mushroom cloud strange again. The mushroom cloud is one of Conner’s signature images, appearing in A Movie, 1958, and briefly in Cosmic Ray, 1961, as well as in his collage works and drawings, some of which are also on display here.