"The intent is to create a set of 40 tones, or voices, that can connote through consonance the serenity and nobility of the site while also through the dissonance recalling the event that consecrated the site", said primary architect Paul Murdoch.
The MAS says, "The memorial was originally going to be called the Towers in Light, but MAS received feedback from 9/11 families that a name paying tribute to the lives lost rather than the buildings that had once stood would be a more powerful remembrance", and notes, "The Tribute in Light rises four miles into the sky and can be seen from 60 miles away". All 33 passengers and seven crew members were killed.
Actual construction on the tower will begin later this month. It should be completed in time for the 17th anniversary of 9/11. Each chime tube is made of polished aluminum measuring eight to 16-inches in diameter, varying in length from five to ten feet. "The National Park Service, with the help of the design team, has engineered an audio simulation of what these chimes may sound like when they are fully installed next year". The size of each chime is dependent on the musical note and associated frequency it is meant to produce.
On September 24, 2002, Congress passed the Flight 93 National Memorial Act.
Sixteen years after the nation's deadliest terrorist attack, the relatives of those lost at the World Trade Center will gather once more at the National September 11 Memorial & Museum to honor the almost 3,000 people who were killed that day.
The Monday anniversary of the crash will be commemorated with a ceremony outside the park's visitor center in Shanksville, where Vice President Mike Pence will address the family and friends of the victims and thousands of citizens who also are expected to attend.
The National Park Foundation is the official charity of America's national parks and nonprofit partner to the National Park Service.
Overall, more than 110,000 people donated about 46 million dollars for the park.