"Communities unite to honor and remember lives lost on 9/11"

Annual memorial events are being held in lower Manhattan to mark the 22nd anniversary of the 9/11 attacks, where nearly 3,000 people were killed. The ceremony includes the reading of the names of those who died, and CBS News New York is streaming the coverage. The remains of victims are still being identified, and advancements in DNA technology recently led to the identification of two victims. The attacks also exposed many people to toxic air and debris, resulting in post-9/11 related illnesses and deaths.