The tower known as 1 World Trade Center, left, the National September 11 Memorial, bottom left, and 4 World Trade Center, right, are bathed in light, Tuesday, Sept. 11, 2012 in New York. Tuesday is the eleventh anniversary of the terrorist attacks of Sept. 11, 2001. (AP Photo/Mark Lennihan)

JENNIFER PELTZ

NEW YORK (AP) - As the sun rose over the World Trade Center on the anniversary of the terrorist attacks, the neighborhood around ground zero seemed more normal than in previous years, with fewer police barricades and commuters rushing out of the subway.

At the southwest corner of ground zero, a lineup of airport-style metal detectors has been set up to clear visitors entering the ceremony.

The detectors are several hundred feet from Engine 10 and Ladder 10, and the company's dozens of firefighters are preparing for the ceremony.

Engine 10 lost five members on Sept. 11, 2001.

Circling the complex were police and fire department vehicles, ambulances and metal barriers protecting the site where victim's families will gather and grieve Tuesday.