When you talk about a disaster that is widely known and has had a huge cultural impact (e.g., 9/11), don't describe it in detail. Instead, pick out a little scene (e.g., the firemen on 9/11 rushing into the building before it collapsed) and focus on that instead. Then relate that little scene to your message.
About speaking,
Tim Wilson
Professional Speech Coach
Free speaking tips at: http://speakingquicktips.blogspot.com
Twitter: @PblcSpkngLibr
