Photo of the Day: Civil Defense Drill in South Korea

An emergency service person in chemical protection clothing participates in a civil defense exercise on December 15, 2010 in Paju, South Korea. The nationwide exercises are intended to better prepare citizens for emergencies as tensions continue to rise following an artillery exchange between the two nations last month. The 20 minute exercise kicked off with air raid sirens with pedestrians required to head to designated bomb shelters and drivers required to stop their vehicles for 15 minutes. (Chung Sung-Jun/Getty Images)