You stay up for 16 hours. He stays up for days on end.
You take a warm shower to help you warm up.
He goes weeks without running water.
You complain of a 'headache' and call in sick.
He gets shot at as others are hit, and keeps moving forward.

You talk trash about your buddies that aren't there.
He knows he may never see any of his ever again.
You complain about how hot it is.
He wears his heavy gear, not daring to take off his helmet to wipe his forehead.
You get mad at the waiter for getting your order wrong.
He doesn't get to eat today.

You're mad that your class got held 5 minutes over.
He's told he will be held over an extra 2 months.
You roll your eyes when your baby cries.
He gets a letter with pictures of his new baby, and wonders if they'll ever meet.