Boarded the Hindenburg with his wife Gertrud as an passenger interviewing Capt. Ernst Lehmann, because they were both writers. Both survived the Hindenburg when it exploded over Lakehurst, New Jersey on May 6th, 1937. They were in the Starboard Lounge were they jumped out the windows of the Zeppelin, when the Zeppelin fell around them trapping them; however a ground crewman from Lakehurst helped them out of the wreckage. They returned to Germany later that summer where they moved to Dresden, Germany. On February 13, 1945 the Allies bombed Dresden originally both escaped their burning house until Leonhard realized he had an unfinished manuscript that he wanted to save which caused him to run back into the house and never came out of the fire.