Wahoo and Umbrella were code names for two underwater tests conducted in 1958. Wahoo was conducted on May 16, 1958 and Umbrella was conducted on June 8, 1958. Pat Bradley, the cameraman who photographed these events recounts his first hand experience of seeing these tests and being on the island as the tests took place.
See this sequence and more in the new HD version of Atomic Filmmakers - Hollywood's Top Secret Film Studio available for viewing on the GoDigital channel on Youtube. www.youtube.com/movie