I came across a great example of using social media for disaster preparedness activities. It is a YouTube video of Vandenberg's 30th Medical Group training on In-place Patient Decontamination. Beyond just sharing the video of the with the world, this is also an opportunity to enhance the after action (debriefing) conversations and the actual exercise report. It goes beyond just describing what happened, to actually being able to show what worked well or needs improvement.
It think having a social video also provides an opportunity to share the story with employees who might not have been involved in the actual exercise. I think back on my Maintenance guys at Ventura County Medical Center and Santa Paula Hospital who could set up a decontamination tent really fast. It might have been nice for others across the organization to see them in action, as well, but making the video available on a hospital blog, the Intranet, or even on a YouTube channel.
Making the video publically available is also an excellent way to share some of the behind-the-scenes work that hospitals do for the benefit of their communities.