Prince George’s County Fire and Emergency Medical Services Department Firefighters climb firetruck ladders to secure the American flag at the 9/11 Remembrance Ceremony held at Heritage Park on Joint Base Andrews, Md., Sept. 9, 2016. The ceremony paid tribute to the first responders and victims of the terrorist attacks on Sept. 11, 2001. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)