"Tribute in Light," a pair of giant beams that mimic the position and shape of the Twin Towers of the World Trade Center, illuminated the NYC Skyline on Tuesday. Tribute in Light is an art installation produced by the Municipal Art Society of New York that serves as an annual memorial to the tragic events of the 9/11 terror attacks. (Photo: VCG)

Colorful high-rise buildings in downtown Pyongyang, North Korea, September 11, 2018. (Photo: VCG)

Tim Cook, CEO of Apple, arrives on stage for the start of an Apple Inc product launch event at the Steve Jobs Theater in Cupertino, California, U.S., September 12, 2018. (Photo: VCG)

Photo taken on Sept. 14, 2018 shows magnolia blossom at the Beijing Garden by Lake Burley Griffin in Canberra, Australia. The magnolia blossom was a message of spring in the city. (Photo: Xinhua)

Soldiers in Mission-Oriented Protective Posture (MOPP) gears withdraw after erecting a DF-21A medium-range ballistic missile system during a training exercise on September 10, 2018. They are assigned to a launching detachment of the PLA Rocket Force. (Photo: eng.chinamil.com.cn)

A demonstrator holds a sign that reads "Brexit. Is it worth it?" while being draped in European Union (EU) flags, as he protests outside the Houses of Parliament in central London on September 10, 2018. (Photo: VCG)

A view of Hurricane Florence churning in the Atlantic Ocean in a west, north-westerly direction heading for the eastern coast of the United States, taken by cameras outside the International Space Station, September 12, 2018. (Photo: VCG)

Signalman Harry Read, a 94-year-old English World War Two veteran, on September 14, 2018, completed his first parachute jump since he landed in Normandy in June 1944. (Photo: VCG)

2018 SCF Far East Tall Ships Regatta was held in Vladivostok on the sidelines of the 2018 Eastern Economic Forum on September 11. (Photo: VCG)