A drone show took place on Wednesday night (9 Sept) above the skies of New York to mark the 25th anniversary of the Sept 11 terror attacks.
Entitled "2,977 Lights Over New York Harbour", it featured one drone for each individual who died.
Credit: 2977 Lights Over New York Harbor
The white lights slowly rose in a spiral, before coming together to form the outline of the Twin Towers at full architectural scale.
According to organisers, the commemorative public art installation was developed in collaboration with members of the 9/11 community, including family members, survivors and first responders.
Credit: 2977 Lights Over New York Harbor