Being nervous is very normal throughout the process. At first I was very excited, but as the days flew by in the summer, the prospect dawned on me, that my summer in Connecticut would not be fun at all. I have family in CT, so my parents and I visited them for the week, but the day or two before we, we got a hotel room in New London. We didn't want to be distracted by some of the extended family business, but wanted to have some family times to ourselves. My parents tried to keep my mind off of the next morning, but there was little they could do. To compound the nerves, my mother thought it would be a good idea to drive onto the campus and see what it looked like the day before. I wasn't thrilled, but we did it anyway. Driving past Chase Hall at a very slow speed, we crawled by a large group of mean looking people in red shirts with "CADRE" spelled out on the back. We drove slow enought to for them to see my face.
There was plenty of time for doubt, plenty of time for the butterflies to take over, and it won't end on the first day. Throughout the summer you say to yourselve "Do I really want to do this to myself?" During the next four years you will have those days and weeks where that question comes back up. Another question you can ask yourself "Why am I doing this?" When that first question comes up, you can answer it with the second question. For the people who don't have an answer for the second question, they have a hard time.
There were plenty of times I wanted to quit. There were many angry phone calls home, plenty of raised voices and "bad" words (a sailor's mouth), but in the end, I could answer that question.
It's good for your son to keep in mind, there are no super heroes at any federal service academy. They are young men and women, just like your son, who want to serve their country. They all have strengths, and they all have weaknesses. They can use those strengths to negate the weaknesses of classmates. You can't get through in on your own, but you learn to rely and be relied on, to make it to the end.
I remember during that summer we double-timed in formation up this one especially daunting hill, between Waesche and Chase Hall, and the cadence always started midway up that hill, when people wanted to vomit and were gasping for air "We started...together....we're going to finish....together".
That rang true throughout my time at the Academy.
Your son can do it, thousands have before him, and thousands more will after him.