Relatives of victims of the Sept. 11, 2001 terrorist attacks attend a memorial ceremony on Sept. 11 at the World Trade Center site in New York. More than 2,700 died in the attacks eight years ago.  Chip East, AFP / Getty Images  Guests attend a memorial ceremony on Sept. 11 at the temporary memorial of the crash of Flight 93 during the Sept. 11, 2001 terrorist attacks in Shanksville, Pa.  Port Authority Police Officer Kim Bonsanti plays "Taps" at the World Trade Center site in New York on Sept. 11. More than 2,700 died in the attacks eight years ago.  Swans swim past a sculpture entitled "La Fourchette Geante" (The giant fork) during its unveiling, in Lake Geneva, Switzerland, on Sept. 11.  Members of the 3rd Platoon, Able Company, 3-509th Infantry Regiment (Airborne), 4th BDE -25th Infantry Division patrol an area damaged during a Taliban assault on July 4th in Zerok, Afghanistan, on Sept. 11.  Workers squeegee the main court in Arthur Ashe Stadium prior to the start of play at the U.S. Open tennis tournament in New York, on Sept. 11.  People cross a flooded street by boat in Ghatal, India, on Sept. 11. Nine people died in flood-related incidents in India as heavy rains struck the country.  The first-ever women recruits for the Indian Border Security Force patrol the India-Pakistan border fence near Amritsar, India, Sept. 11. A total of 178 women recruits were inducted into the force. Most will patrol the 343-mile-long border, while 60 will be posted on the India-Bangladesh border, officials said.  Japan's H-IIB rocket launches from the Tanegashima Space Center on the southern island of Kyushu on Sept. 11. Japan sent its first cargo spacecraft to the International Space Station, aiming for a share of space transport after the retirement of the U.S. space shuttle fleet next year.  Jiji Press / AFP / Getty Images  British ice sculptor Duncan Hamilton carves a replica of Big Ben in Covent Garden, London, on Sept. 11. His sculpture of London's iconic skyline features Canary Wharf, Big Ben, Tower Bridge, the London Eye, St. Paul's Cathedral and the Gherkin.  Shaun Curry, AFP / Getty Images
Staff members of Williston\'s Mercy Medical Center are investigating how the mother of a newborn went home with the wrong baby.