extraordinary day of pageantry and mourning, including a show of unity by king charles and his family as they walked in a royal procession with the queen s flag-draped coffin. and ukrainian president volodymyr zelenskyy visits a newly liberated city and says he s shocked, shocked by the destruction russian troops left behind. cnn is on the ground with the latest on ukraine s gains, russia s retreat, and the state of the war. welcome to our viewers in the united states and around the world. i m wolf blitzer, and you re in the situation room. our top story tonight, a potential freight rail strike in the united states is already having a major impact just ahead of a friday deadline. amtrak shutting down all long-haul train routes as unions and freight rail companies try to hammer out a deal to avoid a work stoppage that could cripple fragile u.s. supply chains. cnn s pete muntean is joining us from just outside the u.s. labor department in washington where negotiations