Well, we're following some major medical news today that could impact more than a million Americans living with or previously diagnosed with the deadliest form of skin cancer. Two pharmaceutical giants announcing today promising results from an experimental vaccine to treat melanoma. Now, according to Merc and Maderna, a combination of the vaccine and medication appear to stop the cancer from returning or spreading in high-risisk patients.NBC News health reporter Arya Bendix joining us now to talk about thi ...