As President Obama and President Bush stood together at Ground Zero, citizens around the globe paid tribute to America's darkest day in various ways. In most places, the mood was somber, though some chose the day to protest. Inevitably, the world remained tense. With the looming threat of an anniversary attack, heavily armed guards stood watch at memorial services around the world, as an enduring reminder of how much has changed. From the French soldiers who stood guard by the Eiffel tower to the Australian firefighters who wore their gear to church services, the overarching message of 9/11 memorials around the world was one of solidarity.
In the dark early morning hours, New York City was illuminated with the tower of One World Trade Center rising up, illuminated in red, white and blue to the left, the Statue of Liberty in the center and the Tribute in Light on the right, where the Twin Towers once stood. (AP image)
Outside of Shanksville, Pennsylvania, two National Park Police stand watch over the memorial service held at the site, where Flight 93 went down. (Reuters image)
A guest holds the program and a tiny America flag at the Pentagon remembrance ceremony. (Reuters image)