Washington, D.C. (September 8, 2021) Homeland Security Secretary Alejandro Mayorkas participates in a 9/11 Remembrance and Survivor Tree Planting Ceremony on DHS's St. Elizabeths campus in Washington, D.C. During the ceremony Secretary Mayorkas was joined by DHS members who were personally affected by the September 11, 2001 attacks. (DHS Photo by Benjamin Applebaum/Released)