Marines, New York City Firefighters and Police Officers fold flags on the roof of Engine and Ladder Company 10 in the shadow of the World Trade Center on Sept.11 2016.
The flags were run up the pole, saluted, brought back to a waiting team of one marine and a firefighter, who gracefully folded and packaged them.
The entrance of Engine and Ladder Company 10 of the Fire Department of New York.
An aerial view of the flag-folding ceremony.The 25 flags that were hoisted 20 feet above the firehouse roof, will be sent to U.S. military bases around the world.
Packaged flags lay on a table during the ceremony. The flags will be accompanied by a note that authenticates that they flew over "Ground Zero" on the 15th Anniversary of the attacks.
A Chicago police officer observes the ceremony.
Firefighters fold a flag.
The World Trade Center stands in the background of firefighters during the ceremony.
FULL COVERAGE: Remembering 9/11