
Americans remembered 9/11 on Sunday with tear-choked tributes, and pleas to "never forget," 21 years after the deadliest terror attack on US soil.
Bonita Mentis set out to read victims' names at the ground zero ceremony wearing a necklace with a photo of her slain sister, Shevonne Mentis, a 25-year-old Guyanese immigrant who worked for a financial firm.