NYC and the nation are vowing to "never forget" what happened during the 9/11 attack 24 years ago today.

New York commemorates 9/11 attacks, with political tensions high and mayoral election looming, as city remembers 2,977 lives lost.

The annual reading of the names of those killed in the Sept. 11, 2001, terrorist attacks will be held on Thursday. Other moments of remembrance took place across the region.