The U.S. Army’s 21st Theater Signal Brigade held a change of responsibility ceremony on Fort Detrick Friday, September 5.

The 7th Signal Command (Theater) enables the Army’s ability to build, train, compete, fight, and win across complex Joint & Coalition Multi- and All-Domain environments.

Defense Secretary Pete Hegseth pulled the airstrike details he posted into Signal chats with his wife, brother and others from a secure communications channel used by U.S. Central Command ...