The Alaska National Guard, in coordination with nearly 50 organizations and more than 4,000 participants, conducted their state’s portion of the annual Vigilant Guard exercise from April 26 – May 1, 2010. Local governments, the State of Alaska, Alaska National Guard and Joint Task Force Alaska conducted a state-wide exercise that was designed to “increase emergency response capabilities” to earthquakes and natural disasters. The exercise scenario involved an earthquake affecting South Central Alaska and combined the state’s Alaska Shield exercise, National Guard’s Vigilant Guard exercise, and Joint Task Force Alaska’s Arctic Edge exercise. A major component of the exercise involved the expertise of the National Guard CBRNE Enhanced Response Force Package, which deals with chemical, biological, and radiological disaster response.