9/11 Memorial Retreat honors victims, first responders
U.S. Air Force Staff Sgts. Mark Morales, 60th Security Forces Squadron installation patrol, and Martina Shannon-Young, 60th Medical Operations Squadron mental health technician, fold the flag during a 9/11 Memorial Retreat Ceremony Sept. 11, 2019, at Travis Air Force Base, California. The ceremony honored the victims of the terrorist attacks on Sept. 11, 2001 and the first responders who risked their lives to save them. (U.S. Air Force photo by Heide Couch)