Memorial Benches The National 9/11 Pentagon Memorial is seen at dawn on the 19th anniversary of the September 11th terrorist attacks, Sept. 11, 2020. SHARE IMAGE: Download Image: Full Size (6.66 MB) Tags: Observances, 9/11 Photo By: Lisa Ferdinando, DOD VIRIN: 200911-D-BN624-0219A.JPG Photo Gallery