Approximately 5,000 U.S. sailors & marines deploying to Mideast to support war in Iran

The Trump administration downplays concerns about Iran blocking the Strait of Hormuz with gas and oil prices rising and as 5,000 U.S. service members are being deployed to the region. NBC News correspondents Monica Alba, Courtney Kube, Andrea Mitchell and Keir Simmons report on the state of the war.