Firefighters climb in honor of the fallen on 9/11 Published Sept. 11, 2021 By Staff Sgt. Alexandra M. Longfellow Peterson-Schriever Garrison Public Affairs PETERSON SPACE FORCE BASE, Colo. -- Firefighters climb the steps of the Manitou Incline on the 20th Anniversary of 9/11 at Manitou Springs, Colorado, Sept. 11, 2021. The firefighters have traditionally carried up the U.S. flag along with a flag with all the names of first responders who lost their lives in the Sept. 11 attacks. (U.S. Space Force photo by Staff Sgt. Alexandra M. Longfellow)