U.S. building up military presence in western Pacific

Read MoreAs the war in Ukraine is set to enter its second year and tensions with China continu to rise, the U.S. is increasing its military presence in the western Pacific. Norah O’Donnell reports from the USS Nimitz in Guam.As the war in Ukraine is set to enter its second year and tensions with China continu to rise, the U.S. is increasing its military presence in the western Pacific. Norah O’Donnell reports from the USS Nimitz in Guam.