JERSEY CITY - Residents gathered in Jersey City this morning to mark the anniversary of the Sept. 11 terror attacks.

Twelve years ago today, terrorists hijacked planes and attacked the World Trade Center, the Pentagon and crashed a passenger jet in a field in Shanksville, Penn.

Each year since the attack a tribute ceremony called Reflections has been held in Jersey City.

Jersey City Mayor Steven Fulop was working for Goldman Sachs, just three blocks away from the World Trade Center when the towers were struck. He was so affected by the attacks, he joined the United States Marines, later serving in Iraq.

"I think that 9/11 changed my trajectory in life, I probably would have stayed in financial services had that never happened," Fulop says. "I found myself in military service, then public service and I find myself here today."

Ceremonies were held at Ground Zero, the Pentagon and at the Flight 93 National Memorial. President Obama spoke at the Pentagon memorial.

Gov. Chris Christie marked today by meeting some of the victims' family members at Liberty State Park.