This morning, more than 4,000 flights have already been cancelled and nearly 5,000 delayed—a staggering number for this time of day. Also, the Supreme Court hands down a ruling that would keep the controversial “Title 42” policy in place for another six months until the final decision. Plus, Ken Burns is in studio 1A to talk about his new book, “Our America: A Photographic History.” And, the emotional reunion of a heroic cardiologist and two marathon runners whose lives he saved.