I was at a Marine Reunion at the Pensacola Naval Air Station in January 2010.
Very nice place. We stayed on base.
At 0500 hours the cadets began their physical training. Running, pushups, all kinds of exercise. All very loud.
Then the jets started taking off. Really loud.
Then the bugle.
Very impressive watching all these dedicated gung ho young men and women.
More info and photos at the blog below: