The Pentagon inspector general's office will investigate Defense Secretary Pete Hegseth's use of commercial messaging app Signal to discuss air strikes on Yemen. The probe will evaluate compliance with policies and procedures for the use of a commercial messaging application for official business, as well as classification and records retention requirements. The investigation came in response to a request from the top two members of the Senate Armed Services Committee. The Atlantic magazine revealed that its editor-in-chief was inadvertently included in the Signal chat, which included details of the strikes and real-time intelligence on the aftermath.