Saw it in Brooklyn as well. It was awful, Islamic glee and contempt as the Trade Center was burning.
My memory is the celebrating in Brooklyn - not NJ! You’re the first on FR to corroborate my memory.
The Bush II Government put a clap down on this “News” out of fear the US Population would take out revenge attacks on Mosques, businesses etc.. . They were right too—Americans were so angry they might well have burned Muslim neighbors to the ground.