Surprised and curious, I listen to our Dharma teacher lead us in a practice to restore inner peace after the tragic shootings at Virginia Tech.  Blue Sky Practice can be used by any group, anywhere, anytime to restore a sense of peace in times of trouble.  You can read about this practice in the Mindfulness Bell: 

http://www.mindfulnessbell.org/articles/mb48.pdf

Under “Search,” type in the title, BLUE SKY PRACTICE.