Fun fact: that speech was a first draft. The writer made himself a note to revise it, but got busy enough with other stuff that he forgot. He remembered last minute when they were prepping to shoot the scene, but it was too late as Bill Pullman had already memorized it and had also spent time listening to unedited recordings of presidents giving big speeches throughout history to make sure it had the correct tone (this is also why he has the kind of awkward start).