All branches of the U.S. military began once again requiring their recruits to get flu vaccines earlier this month, an exception to Defense Secretary Pete Hegseth's decision to lift the military's vaccine mandate, a Pentagon official confirmed to CBS News on Wednesday. The news comes as Lackland Air Force Base in Texas — home to the Air Force's Basic Military Training program — grapples with a flu outbreak that has infected 275 people in recent weeks, a congressional staffer with knowledge of the matter told CBS News. The process of reinstating the mandate for recruits began before the Lackland outbreak...