Many Minnesota businesses would just as soon put the last two years behind them. But as one of the state's few defense-industry companies, Edina- based Alliant Techsystems stands out as an exception in an otherwise stagnant post-9/11 economy. Alliant Techsystems, which now prefers to be known by its stock ticker initials, A-T-K, is a 2 Billion dollar public company that's been attracting a growing number of military contracts and shareholders. Minnesota Public Radio's Marisa Helms reports.