NEW YORK -- Twenty years after the Sept. 11 terrorist attacks on the U.S., memorial services and moments of silence were held where the World Trade Center once stood in New York City and other locations on Saturday.
At the ceremony in New York, moments of silence were observed at 8:46 a.m. and 9:03 a.m. when al-Qaida-hijacked American Airlines flights 11 and 175 hit the twin towers, respectively. The names of almost 3,000 people who died were read out.
