U.S. service members stand at attention during a remembrance

U.S. service members stand at attention during a remembrance ceremony honoring special operators who were killed March 4, 2002 during Operation Anaconda: U.S. Air Force Senior Airman Jason Cunningham, U.S. Army Cpl. Matthew Commons, U.S. Army Spc. Marc Anderson, U.S. Army Sgt. Phillip Svitak, U.S. Army Sgt. Bradley Crose, U.S. Navy Petty Officer 1st Class Neil Roberts and U.S. Air Force Tech. Sgt. John Chapman, March 4, 2015 at Bagram Air Field, Afghanistan. Service members from all branches conducted a 24-hour vigil run and a retreat ceremony to honor the 13th anniversary of their deaths and pay homage to a legacy of heroism. (U.S. Air Force photo by Staff Sgt. Whitney Amstutz/released)