His efforts to obtain the weapons earned him a 30-year prison sentence . Recent terror alert renews concern about Maxwell School of Public Policy , authors say . Their study shows domestic terrorism often comes from Non-Islamist sources . non-Islamist terrorists have been more likely to seek unconventional weapons , they say . Authors : In Chicago , Non-Islamist terrorism no more deadly than other forms since 9/11 .
Recent terror alert renews concern about Maxwell School of Public Policy , authors say . Their study shows domestic terrorism often comes from Non-Islamist sources . non-Islamist terrorists have been more likely to seek unconventional weapons , they say . Authors : In Chicago , Non-Islamist terrorism no more deadly than other forms since 9/11 .