Platform 4 – More than a million people have fled Ukraine since the Russian invasion. Scott Pelley reports from a train station near Poland's border with Ukraine and speaks with the refugees and those trying to help them. State Of The Pandemic – 60 MINUTES goes behind the scenes at the Centers for Disease Control in Atlanta to report on the current state of the pandemic. Since first being identified in the United States just three months ago, strains of the milder Omicron have almost entirely replaced the more virulent Delta variant. Hospitalizations, cases, and deaths are dropping. The CDC has announced a relaxation of guidelines – saying for most Americans, it's okay to drop the mask. What is the next phase of the pandemic? Dr. Jon LaPook speaks with CDC director Dr. Rochelle Walensky and other leading experts. Flying Blind – Even the most competitive skiers see Montana's Big Couloir as among the most challenging runs in the country. But for Jacob Smith, who at 15 is the only blind competitive free rider in the country, it was an almost inconceivable feat. After undergoing four major surgeries for a brain tumor starting when he was just eight years old, Jacob did the legendary run three years ago. Sharyn Alfonsi profiles Smith, who competes for the Big Sky freeride team today, and skis by tapping into his other senses and his memory of the mountain before he went blind.