Caslen was at the Pentagon during the September 11 attacks . Following the attack , he re-entered the Pentagon , helping search for wounded and working on reversing the air conditioning system in order to remove smoke from the building . Caslen was also chief of staff of the 10th Mountain Division ( Light ) ( 2003 ) at Fort Drum ; assistant division commander ( Maneuver ) of the 3rd Infantry Division ( Mechanized ) ( 2004 ) ; deputy director for the War on Terrorism , J-5 , the Joint Staff ( 2005 – June 2006 ) ; director of the Joint Staff 's Detainee Affairs Division and commandant of cadets for the Military Academy at West Point , a post he left in May 2008 . Caslen was chief of staff for the Combined Joint Task Force 180 in Afghanistan from May through September 2002 . He was a commander of Operation Champion Sword
September 11 attacks
September 11 attacks
Robert L. Caslen