Tragedy is part of any nation's history. For the U.S. the types have varied but have reached all of us in one way or another. Presidents tend to address us in these times. This video shows some of the best of those speeches. Lincoln's Gettysburg address was only 10 lines long and he did it in 2 minutes. Clinton's Oklahoma City Bombing speech was the shortest of his career at 9 minutes long. Interesting factoids to be found here. http://news.yahoo.com/video/us-15749625/consoler-in-chiefs-23833940