A flu bug has swept the ranks of recruits at San Antonio's Lackland Air Force Base, the service's basic training hub. Nearly 300 are said to have been infected.
The outbreak comes weeks after Defense Secretary Pete Hegseth said flu vaccination was no longer mandatory for service members. More than 150 are reported ill.
The outbreak among trainees comes two months after Defense Secretary Pete Hegseth made the annual flu shot optional for U.S. military personnel.