ISIS fighters also recently shared a disturbing propaganda image threatening a Christmas-time attack on New York City. Below, DailyMail.com looks at the counter-terrorism efforts of five US cities - New York City, Las Vegas, San Francisco, Chicago and Los Angeles - to thwart any potential threats this New Year's Eve. The Numeral '8' is delivered to be placed atop 1 Times Square for the New Year's Eve ball drop. The Mandalay Bay hotel-casino is seen from a distance as Las Vegas Metro Police block off Las Vegas Boulevard the morning after a gunman fired on concertgoers in October. Illuminated buildings are seen during the annual 'Chi-Town Rising New Years Eve countdown celebration' last New Year's Eve.

Source: Daily Mail December 31, 2017 01:06 UTC