The mark consists of a red, white and blue striped ribbon formed into a pentagon atop two black rectangular ribbons, representing the Pentagon and World Trade Center twin towers that were attacked. The red, white and blue represents patriotism and the US military headquarted at the Pentagon, and the black denotes mourning and remembrance for all the victims. The twin towers also form the number eleven, the date of the tragedy. The drawing is shaded for the colors red, white, blue, and black. .