The U.S. Coast Guard is stressing the search for a missing submersible remains a search-and-rescue mission despite concerns over oxygen supplies running out for the five passengers on board. Retired Navy Capt. Brad McDonald says he can't speak to when the U.S. Coast Guard will change into a recovery mission, but he shares a miracle story that happened in 1939. Watch #MorningInAmerica: https://www.newsnationnow.com/joinus #searchandrescue #recovery #missingsub Start your day with "Morning in America," NewsNation's live three-hour national morning newscast hosted by Adrienne Bankert. Weekdays starting at 7a/6C. #MorningInAmerica NewsNation is your source for fact-based, unbiased news for all America. More from NewsNation: https://www.newsnationnow.com/ Get our app: https://trib.al/TBXgYpp Find us on cable: https://trib.al/YDOpGyG How to watch on TV or streaming: https://trib.al/Vu0Ikij