After enlisting in the Minnesota Army National Guard, the Kamunens had second thoughts and didn't return to basic training after Christmas. ________________________________ CARLTON, MINN. -- Luke Kamunen began to wonder if he'd made a mistake the moment he arrived for basic training. He was still in the airport at Fort Jackson, S.C., with other members of his Minnesota National Guard unit, when an officer reprimanded him publicly for leaving a paper cup on his seat in the airport. "I was thinking, is this what it's going to be like the whole time?" Luke said. "I'm not even on the bus...