Retired Admiral James Stavridis discusses President Biden’s decision to withdraw troops from Afghanistan, and whether it will cause a collapse in the country’s security forces. CNBC’s Meg Tirrell reports on where vaccine misinformation is originating in this country and what the government is trying to do about it. The FBI had warned Trump advisor Rudy Giuliani he was being targeted by Russian spies in 2019. NBC’s Julia Ainsley reports. CNBC’s Frank Holland reports on the history of Black jockeys at Churchill Downs and the Kentucky Derby. Plus, after a year-long shutdown, the cruise industry is ready to come back.