 My name is John Rainford, and I'm an instructor here at Carleton University and also the director of the warning project, a non-profit set up to promote better emergency and risk communications. Our professional institute this year is focusing on the active shooter scenario, the risks and rewards of social media engagement. A serious security event, be it an active shooter, be it a credible bomb threat or attack, these are exceedingly rare events, but still organizations have a responsibility to consider the possibility. Now that's not new. What is new is how these events are being communicated. They're unfolding in real time, right, in the public domain like never before, as seen in Europe, in the United States, indeed in recent examples here in the national capital region. This offers great promise. It allows us to warn people at risk very efficiently, very effectively, but the truth is it's also chaotic, the rumors, the confusion. We have to think through all of the challenges around practical, strategic and ethical levels to understand the role of social media and how we deal with these potential problems. The professional institute in risk communications is designed to tackle complex and pressing risk communications challenges and this issue absolutely fits the bill. It's why we're so excited about this year's session and why we're very much hoping that you can join us.