A dozen Army National Guard members have been removed from the inauguration security mission, including two who were sent home after vetting for extremist links found an "inappropriate" text and comment, the Pentagon said oTuesday.

Each of the 25,000 National Guardsmen now in Washington assisting with security at Wednesday's presidential inauguration is being vetted by the FBI.

Each of the dozen Guard members has been sent back to his or her home state for later investigation either by their chain of command or law enforcement, officials said.

Read more: ABC News