US Defense Secretary Pete Hegseth shared details of a March attack on Yemen's Iran-aligned Houthis with his family in a message group, raising concerns about the use of an unclassified messaging system for sensitive security details. The chat included discussions about the strikes and the schedule of the air strikes. Hegseth's wife, Jennifer, has reportedly attended sensitive meetings with foreign military counterparts. The use of Signal for classified information comes as one of Hegseth's advisers was escorted from the Pentagon during an investigation into leaks at the Department of Defense.