DES MOINES, Iowa (AP) – Iowa National Guard and U.S. Army Reserve troops are being warned to remove personal and military data from their social media accounts, lest the information help terrorists launch attacks inside the United States. Officials with the Iowa National Guard and the Army Reserve’s 103rd Sustainment Command (Expeditionary) at Fort Des Moines, which oversees 5,000 troops in four states, told The Des Moines Register that troops won’t be barred from using social media accounts.

The National Guard spokesman, Col. Gregory Hapgood Jr., says the troops shouldn’t list anything about their employment or travel plans. Hapgood says Iowa National Guard units’ Facebook accounts now just mention events that already have occurred, rather than upcoming events.