The 151st Theater Information Operations Group, or 151st TIOG, is an Information Operations formation of the United States Army, headquartered at Fort Totten, New York. Founded in 2009, the 151st TIOG is the only Theater Information Operations Group in the U.S. Army Reserve. It is composed mostly of Army Reserve Soldiers in two battalions based out of Parks Reserve Forces Training Area (Camp Parks), Fort George G. Meade, and Fort Totten. The current commander is Colonel Marlene Markotan, who assumed command in July 2019.