I tried to join the service after high school. I knew what the answer would be. ("No.") I had nothing but respect from the recruiters, but the fact is, like TheWriteAlex said, people in the service are soldiers trained for combat readiness. One needs to be able to hear verbal orders and carry them out immediately. There's no time to interpret in the middle of a skirmish or battle. It's the difference between life and death, or losing or winning a fight.
I have the utmost respect for this man and I totally understand where he is coming from.