Wildlife biologist Chris Nadareski, foreground, of the New York City Department of Environmental Protection, assisted by Port Authority structural specialist Pete Mizialko, holds one of four peregrine falcon chicks for banding, at a nest at the east tower of the George Washington Bridge, over the Hudson River, in New York, Tuesday, May 21.

The mother of four baby peregrine falcons guards her nest and chicks at the east tower of the George Washington Bridge, over the Hudson River, in New York, Tuesday, May 21.

Wildlife biologist Chris Nadareski, of the New York City Department of Environmental Protection, examines one of four peregrine falcons he banded, at a nest at the east tower of the George Washington Bridge, over the Hudson River, in New York, Tuesday, May 21.

The mother of four baby peregrine falcons takes off from the George Washington Bridge, over the Hudson River, in New York, Tuesday, May 21.

Veterinarian Philip Fox mounts a heart monitor on the side of Oliver, a golden retriever, at the Animal Medical Center in New York City, Dec. 10, 2012.

Anesthesiologist Patty Fontana calms Cody, who had been sedated to take x-rays of his hip, at the Animal Medical Center in New York City, Dec. 10.

Veterinarian Josh Steinhouse retrieves surgical instruments while operating on a dog at the Animal Medical Center in New York City, Dec. 12. A team of veterinary specialists removed bladder stones from the pet during the surgical procedure in the hospital's $3.5 million hybrid operating suite, the only one of its kind in the U.S.

A bearded dragon stands under a heat lamp before receiving an ultrasound test for pregnancy at the Animal Medical Center in New York City, Dec. 12.

Veterinarian Laura Proietto speaks with a pet owner about his dog's condition at the Animal Medical Center in New York City, Dec. 12.

A blacked-out lower Manhattan is seen from the Dumbo neighborhood of Brooklyn on Oct. 30. Lower Manhattan is still suffering from widespread power outages and flooding from Hurricane Sandy.

People are illuminated by a light from a car battery as they wait to leave the city on a bus heading to North Carolina from the Chinatown area of New York on Oct. 30.

The dark skyline of lower Manhattan is seen from a rooftop in Brooklyn on Oct. 30.

A dark lower Manhattan is seen from a NY Waterways ferry in Jersey City, N.J., on the morning of Oct. 31.

Power outage seen on Monday night in Manhattan, New York.

Sea water floods the Ground Zero construction site, Oct. 29, 2012, in New York. Sandy continued on its path Monday, as the storm forced the shutdown of mass transit, schools and financial markets, sending coastal residents fleeing, and threatening a dangerous mix of high winds and soaking rain.

The Tribute of Light illuminates the sky over lower Manhattan as technicians adjust the individual spotlights on Sept. 6 in New York.

Katrina Cohen practices on a trapeze at Trapeze School New York, on July 1. At the school, students learn trapeze maneuvers with the skyscrapers of Lower Manhattan as a backdrop. The school is located on a rooftop at Pier 40 on the Hudson River.

Brandi Baker wraps her hands before a workout at Trapeze School New York, on July 1.

Greg Cooper spreads his arms as he works out on a trampoline at Trapeze School New York, on July 1.

Construction workers and guests watch as the final steel beam to be installed on 4 World Trade Center is raised during a ceremony in New York, June 25.

Construction workers sign the last steel beam before it is hoisted 977 feet to the top of Four World Trade Center on June 25, in New York City.

The last steel beam is lifted to the top of 4 World Trade Center, June 25.

In a photo made Saturday, June 23, 2012, construction cranes perch on top of One World Trade Center, left, and Four World Trade Center in New York.

Confetti flies over New York's Times Square as the clock strikes midnight during the New Year's Eve celebration as seen from the balcony of the Marriott Marquis hotel, Saturday, Dec. 31.

A member of the clean up crew clears confetti from Broadway after the New Year's Eve celebration as seen from the balcony of the Marriott Marquis hotel in New York's Times Square, Jan. 1, 2012.

The news media gathers across the street from the townhouse, center, in the Tribeca area of Manhattan where former IMF head Dominique Strauss-Khan is being held under house arrest in New York, May 25.

A woman walks her dog past a building in Tribeca, New York that is believed to be the new residence of Dominique Strauss-Kahn.