On Sunday evening, the Instagram account of the chief master sergeant of the Space Force began pumping out pro-Iran propaganda in an apparent security breach at the Pentagon.

The social media account of Space Force Chief Master Sergeant John F. Bentivegna, which has just over 1,000 followers, typically posts updates for the branch’s enlisted rank-and-file. Visitors on Sunday evening were instead met with graphics calling for America’s defeat in the monthslong conflict.