A CNN KFile review of his social media found that Johnson posted birther conspiracies about then-President Barack Obama and shared a video that claimed Obama was the Antichrist.

After CNN initially reached out to the Pentagon for comment, Johnson made his Facebook account private. A spokesperson confirmed Johnson was still working at the Pentagon Tuesday morning, but in the afternoon, after CNN informed the Department of Defense that a story was forthcoming, a Pentagon spokesperson said Johnson had offered his resignation and that it was accepted.

Photos and videos posted online show Johnson has traveled extensively with Secretary of Defense Jim Mattis overseas and posed in photos with Trump and at the Pentagon along with Mattis and former Defense Secretary Chuck Hagel.