Beginning with Trinity , the very first nuclear test in 1945 , there was an obvious need to document nuclear testing with still and moving pictures photography . The film was needed for the study and understanding of the behavior of nuclear weapons . In 1946 , in support of Operation Crossroads , the first atomic bomb test in the Pacific , the joint task force conducting the test had pulled together a provisional photographic unit of still and motion picture photographers to document the test . Most of these photographers were part of a small detachment of the 1st Motion Picture Unit from Long Island , New York
Trinity
Trinity (nuclear test)
Lookout Mountain Air Force Station