Could /would anyone familiar with the USNA Summer Block "Marine Corps Ground Thing" please give Mom a little more detail about what it is? Is it at Camp Pendleton? Parris Island? Somewhere else? The " I can't explain it" part of DS's comment means he doesn't want to spend time telling me exactly what it is, knowing DS. Or is it top-secret and he can't say? He is very excited to be going,;it was one of his first choices for summer block.