The Pentagon set up a system in Defense Secretary Pete Hegseth's office that enabled him to check messages on the encrypted messaging app Signal while at the office, sources familiar with the matter told CBS News. Two of the sources said the system bypasses standard Defense Department security protocols.

The Department of Defense (DOD) is again under scrutiny after a turbulent week of departures, and a second reported Signal group chat involving Secretary of Defense Pete Hegseth.Here's a look at the latest on the DOD shakeups.

Pete Hegseth's wife is reportedly causing tension at the Pentagon where there is growing frustration at Jennifer Hegseth's "near constant presence" at her embattled husband's side. The secretary of defense put up large photographs of his wife on the walls of a Pentagon conference room.