After 9/11, two arborists joined the grim task of collecting evidence in the woods of Shanksville
Arborist Mark Trautman, who worked to recover the debris from the hijacked United Airlines Flight 93 near Shanksville, poses for a portrait in Stoystown, Pennsylvania, U.S., September 2, 2021. Picture taken September 2, 2021. REUTERS/Hannah Beier