CLARKSVILLE, Tenn. - A little girl in Heidi braids sat on her father's knee in a hotel lobby, hesitating before answering his question. "How do you feel about what I do?" Stan Caldwell asked. "Um," replied Haley Caldwell, 9. "I'm glad I have a dad who will do this, but when this happens, I wish you didn't have this job." Somewhere in Kuwait is a big, steel trunk the Army shipped, filled with what Caldwell figured he'd need. But his Tupelo, Miss., family gave him more as they prepared to send him off to war today. A slumber party prayer....