Participants of the 2017 Richmond 9/11 Memorial Stair Climb bow their heads in prayer before the 2017 Richmond 9/11 Memorial Stair Climb in downtown Richmond, Va., Sept. 10, 2017. Hundreds of first responders and local community members joined together to pay tribute to New York Fire Department firefighters, police and emergency medical service personnel who lost their lives on Sept. 11, 2001, by climbing the equivalent of the 110 stories of the World Trade Center in New York City. (U.S. Air Force photo by Airman 1st Class Gabrielle Spalding)