People look at The Tribute in Light installation from Liberty State Park, marking the 19th anniversary of the 9/11 attacks in New York City, as seen from Jersey City, New Jersey. REUTERS

The Statue of Liberty is seen as the Tribute in Light shines in downtown Manhattan to commemorate the 19th anniversary of the September 11, 2001 attacks on the World Trade Center at the 9/11 Memorial & Museum in the Manhattan borough of New York City, New York. REUTERS

People look at The Tribute in Light installation from Liberty State Park, marking the 19th anniversary of the 9/11 attacks in New York City, as seen from Jersey City, New Jersey. REUTERS

People look at The Tribute in Light installation from Liberty State Park, as seen from Jersey City, New Jersey. REUTERS

People look at The Tribute in Light installation from Liberty State Park, marking the 19th anniversary of the 9/11 attacks in New York City, as seen from Jersey City, New Jersey. REUTERS

A woman looks at The Tribute in Light installation from Liberty State Park, marking the 19th anniversary of the 9/11 attacks in New York City, as seen from Jersey City, New Jersey. REUTERS

The Statue of Liberty is seen as the Tribute in Light shines in downtown Manhattan to commemorate the 19th anniversary of the September 11, 2001 attacks on the World Trade Center at the 9/11 Memorial & Museum in the Manhattan borough of New York City, New York. REUTERS