tribute in light / september 11th annual memorial

Everyone in America was affected by the events on 9/11/01 when two planes knocked down the World Trade Center otherwise known as the Twin Towers. Every year there are two bright blue beams to replicate the twin towers that shine in memory of those lost. 

As per Wikipedia "On September 13, 2001, the concept was introduced by John Englehart in a meeting with the crisis communications task force at the electric utility Consolidated Edison, as a signal of support for the community. Architects John Bennett and Gustavo Bonevardi of PROUN Space Studio distributed their "Project for the Immediate Reconstruction of Manhattan's Skyline". Artists Julian LaVerdiere and Paul Myoda, who before September 11 were working on the 91st floor of the World Trade Center north tower on a proposed light sculpture on the giant radio antenna with Creative Time, conceived of a project called "Phantom Towers". They were commissioned by The New York Times Magazine, (Janet Froelich, art director) to create an image of the project for its September 23 cover."