Graduated from Army AIT (job training) this past october, and I happened to be the distinguished honor graduate in my class. I had to do a presentation/speech in front of a colonel, sergeants major,a first sergeant, a few other high ranking officers and enlisted personnel, on behalf of my class. I was nervous as shit and I had gone over the speech so many times I practically had it memorized. I had a couple of blocks towards the first paragraph but after that everything flew out smoothly. I did take a breath or two during the blocks to calm the hell down and it did work. Not only that I took two atarax anti anxiety pills and fuck I still felt anxious. Just correct and proper breathing is what helped me the most.