In an emergency hearing, a Tennessee judge ruled that the state must preserve evidence related to Christa Pike's failed execution. Pike's attorneys revealed that she has pneumonia and no function in her arms after the execution attempt left  her unconscious and on life support for six days. NBC News' Aaron Gilchrist and Danny Cevallos report. For more context and news coverage of the most important stories of our day, click here: nbcnews.com Every day, NBC News helps people understand what’s happening and why it matters — through fact-based reporting, meaningful conversations, and powerful stories. From its leading news broadcasts — TODAY, NBC Nightly News, Meet the Press, and Dateline — to NBC News NOW, the 24/7 streaming news channel, plus chart-topping podcasts, the NBC News app, and NBCNews.com, NBC News keeps audiences informed and connected to the stories shaping our world. NBC News. Reporting for America. » Subscribe to NBC News: nbcnews.to/SubscribeToNBC...