Mary Lou Retton

A missing door plug that detached from an Alaska Airlines jet at 16,000 feet on Friday, has been found in an Oregon backyard, officials announced. Meanwhile the FAA says the 737 Max 9s will remain grounded as the investigation unfolds. NBC's Tom Costello reports for TODAY.  A weekend winter storm left a trail of snow and rain up and down the East Coast and another storm is already in the works. NBC's Kathy Park reports and TODAY's Al Roker tracks the latest forecast. Secretary of Defense Lloyd Austin is facing intense scrutiny over a secret hospital stay and treatment in the ICU. He was admitted one week ago but senior White House officials were not told for three days. NBC's Hallie Jackson reports for TODAY. The Republican field of presidential hopefuls are barnstorming the state of Iowa with the caucuses just one week away. Challengers to frontrunner Donald Trump hope for a late surge to close the gap with his increasing lead. NBC's Garrett Haake reports for TODAY. Legendary Olympic gymnast Mary Lou Retton speaks exclusively to TODAY's Hoda Kotb about the fight for her life with a rare form of pneumonia that landed her in the ICU for a month and the outpouring support from her fans. "I have so much to look forward to. I'm a fighter."