Times Square ball fitted with energy-saving light-emitting diodes . New York 's terrorist threat level remains at orange -- the nation 's second highest level -- as it has since the September 11 , 2001 , attacks . A million people to attend , officials say , a billion expected to watch on video . The city is also planning an elaborate fireworks display that will be broadcast live over the Internet. Hannah Montana , Kid Rock , Lenny Kravitz , Carrie Underwood . 1907 ball was made of iron and wood and covered with about 100 light bulbs .
Times Square ball fitted with energy-saving light-emitting diodes . A million people to attend , officials say , a billion expected to watch on video . The city is also planning an elaborate fireworks display that will be broadcast live over the Internet. Hannah Montana , Kid Rock , Lenny Kravitz , Carrie Underwood . 1907 ball was made of iron and wood and covered with about 100 light bulbs .