What's the Difference?

As a sergeant in a parachute regiment, I took part in several night-time exercises. Once, I was seated next to a lieutenant fresh from jump school. He was quiet and looked a bit pale, so I struck up a conversation. "Scared, lieutenant?" I asked. He replied, "No, just a bit apprehensive." I asked, "What's the difference?" He replied, "That means I'm scared, but with a university education."