Defense Secretary Lloyd Austin hospitalized again for bladder issues, announced by Pentagon spokesperson Sunday afternoon. Deputy Secretary of Defense Kathleen Hicks assumes duties. Austin admitted to Walter Reed’s critical care unit late Feb 11. Hospitalization follows symptoms indicating bladder problems; duration unclear. Previous disclosure about prostate cancer treatment history. Apologized for delayed disclosure to president and public. Previous surgical procedure led to urinary tract infection and complications. Faced intense scrutiny and criticism over delayed disclosure. Expressed personal struggles and initial inclination for privacy.